commit 69f4d4754f2ea5cf5e922709aaa499c0b9bbe743
Author: insulee <insulee@users.noreply.github.com>
Date:   Tue Jun 23 16:10:40 2026 +0900

    Initial commit: 펌웨어 플래시 도구 (WPF) + 기존 PowerShell 키트
    
    - DB720Flasher: WPF .NET 9 GUI 플래셔
      - 멀티모델 프로파일(flash.json + 빌트인 DB720/DB402S/DB400S/DB400Q/DB300eM)
      - 포트 자동감지(JTAG 우선, 유령 포트 자동 회피), esptool v5 동봉
    - flash_app.ps1 / flash_full.ps1 / list_ports.ps1: 기존 PowerShell 키트
    - profiles/: 모델별 flash.json 템플릿
    - firmware/flash.json: DB720 모델 설정 (서명 실펌웨어 .bin 은 repo 제외)
    
    Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

diff --git a/.gitattributes b/.gitattributes
new file mode 100644
index 0000000..7103229
--- /dev/null
+++ b/.gitattributes
@@ -0,0 +1,7 @@
+# 텍스트는 자동 정규화(repo엔 LF, 체크아웃 시 OS에 맞게)
+* text=auto
+
+# 바이너리 — 줄바꿈 변환 금지
+*.exe   binary
+*.bin   binary
+*.png   binary
diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..1b4972f
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,15 @@
+# ===== .NET 빌드 출력 =====
+[Bb]in/
+[Oo]bj/
+.vs/
+*.user
+
+# ===== 배포본 (repo 말고 Gitea Releases로) =====
+/dist/
+
+# ===== 서명 실펌웨어 — repo에 넣지 않음(보안·분리). flash.json 은 포함 =====
+firmware/*.bin
+
+# ===== 임시 캡처/찌꺼기 =====
+*_shot.png
+_distcheck.png
diff --git a/DB720Flasher/App.xaml b/DB720Flasher/App.xaml
new file mode 100644
index 0000000..3d4693c
--- /dev/null
+++ b/DB720Flasher/App.xaml
@@ -0,0 +1,12 @@
+<Application x:Class="DB720Flasher.App"
+             xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
+             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+             StartupUri="MainWindow.xaml">
+  <Application.Resources>
+    <ResourceDictionary>
+      <ResourceDictionary.MergedDictionaries>
+        <ResourceDictionary Source="Themes/Controls.xaml" />
+      </ResourceDictionary.MergedDictionaries>
+    </ResourceDictionary>
+  </Application.Resources>
+</Application>
diff --git a/DB720Flasher/App.xaml.cs b/DB720Flasher/App.xaml.cs
new file mode 100644
index 0000000..d71276c
--- /dev/null
+++ b/DB720Flasher/App.xaml.cs
@@ -0,0 +1,7 @@
+using System.Windows;
+
+namespace DB720Flasher;
+
+public partial class App : Application
+{
+}
diff --git a/DB720Flasher/DB720Flasher.csproj b/DB720Flasher/DB720Flasher.csproj
new file mode 100644
index 0000000..39e4f8b
--- /dev/null
+++ b/DB720Flasher/DB720Flasher.csproj
@@ -0,0 +1,26 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>WinExe</OutputType>
+    <TargetFramework>net9.0-windows</TargetFramework>
+    <Nullable>enable</Nullable>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <UseWPF>true</UseWPF>
+    <RootNamespace>DB720Flasher</RootNamespace>
+    <AssemblyName>DB720Flasher</AssemblyName>
+    <Version>1.0.0</Version>
+    <ApplicationManifest>app.manifest</ApplicationManifest>
+    <SatelliteResourceLanguages>en</SatelliteResourceLanguages>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="System.Management" Version="9.0.0" />
+    <PackageReference Include="System.IO.Ports" Version="9.0.0" />
+  </ItemGroup>
+
+  <!-- 동봉 자산: firmware\ 와 tools\esptool\ 를 빌드 출력으로 복사 -->
+  <ItemGroup>
+    <None Include="tools\**\*" CopyToOutputDirectory="PreserveNewest" LinkBase="tools\" />
+  </ItemGroup>
+
+</Project>
diff --git a/DB720Flasher/MainWindow.xaml b/DB720Flasher/MainWindow.xaml
new file mode 100644
index 0000000..275dc63
--- /dev/null
+++ b/DB720Flasher/MainWindow.xaml
@@ -0,0 +1,179 @@
+<Window x:Class="DB720Flasher.MainWindow"
+        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
+        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+        Title="펌웨어 플래시 도구" Height="660" Width="960"
+        MinHeight="560" MinWidth="860"
+        Background="{StaticResource Bg}" FontFamily="Segoe UI"
+        TextOptions.TextFormattingMode="Display">
+
+  <Window.Resources>
+    <Style x:Key="Card" TargetType="Border">
+      <Setter Property="Background" Value="{StaticResource Surface}" />
+      <Setter Property="BorderBrush" Value="{StaticResource Border}" />
+      <Setter Property="BorderThickness" Value="1" />
+      <Setter Property="CornerRadius" Value="10" />
+      <Setter Property="Padding" Value="16" />
+    </Style>
+    <Style x:Key="Hint" TargetType="TextBlock">
+      <Setter Property="Foreground" Value="{StaticResource TextSubtle}" />
+      <Setter Property="FontSize" Value="12" />
+      <Setter Property="TextWrapping" Value="Wrap" />
+    </Style>
+    <Style x:Key="FieldLabel" TargetType="TextBlock">
+      <Setter Property="Foreground" Value="{StaticResource TextSubtle}" />
+      <Setter Property="FontSize" Value="11" />
+      <Setter Property="FontWeight" Value="SemiBold" />
+      <Setter Property="Margin" Value="2,0,0,4" />
+    </Style>
+  </Window.Resources>
+
+  <Grid>
+    <Grid.RowDefinitions>
+      <RowDefinition Height="Auto" />
+      <RowDefinition Height="*" />
+    </Grid.RowDefinitions>
+
+    <!-- 헤더 -->
+    <Border Grid.Row="0" Background="{StaticResource SurfaceAlt}" Padding="18,12">
+      <DockPanel>
+        <TextBlock DockPanel.Dock="Left" Text="펌웨어 플래시 도구" Foreground="{StaticResource Text}"
+                   FontSize="18" FontWeight="Bold" VerticalAlignment="Center" />
+        <TextBlock x:Name="txtEsptool" Text="esptool 확인 중…" Foreground="{StaticResource TextSubtle}"
+                   FontSize="11" VerticalAlignment="Center" HorizontalAlignment="Right"
+                   TextTrimming="CharacterEllipsis" MaxWidth="460" />
+      </DockPanel>
+    </Border>
+
+    <!-- 본문: 좌(설정) / 우(실행+로그) -->
+    <Grid Grid.Row="1" Margin="16">
+      <Grid.ColumnDefinitions>
+        <ColumnDefinition Width="350" />
+        <ColumnDefinition Width="*" />
+      </Grid.ColumnDefinitions>
+
+      <!-- ===== 좌: 설정 ===== -->
+      <Border Grid.Column="0" Style="{StaticResource Card}">
+        <ScrollViewer VerticalScrollBarVisibility="Auto">
+          <StackPanel>
+
+            <TextBlock Style="{StaticResource FieldLabel}" Text="펌웨어 폴더" />
+            <Grid>
+              <Grid.ColumnDefinitions>
+                <ColumnDefinition Width="*" />
+                <ColumnDefinition Width="Auto" />
+              </Grid.ColumnDefinitions>
+              <TextBox x:Name="txtFwFolder" Grid.Column="0" IsReadOnly="True" Text="(탐색 중…)" />
+              <Button x:Name="btnBrowse" Grid.Column="1" Content="폴더…" Margin="6,0,0,0" Click="OnBrowseClick" />
+            </Grid>
+
+            <TextBlock Style="{StaticResource FieldLabel}" Text="앱" Margin="2,12,0,4" />
+            <ComboBox x:Name="cboApps" />
+
+            <TextBlock Style="{StaticResource FieldLabel}" Text="모델" Margin="2,12,0,4" />
+            <ComboBox x:Name="cboModel" />
+            <TextBlock x:Name="txtProfile" Style="{StaticResource Hint}" FontSize="11" Margin="2,4,0,0" />
+
+            <Grid Margin="0,12,0,4">
+              <Grid.ColumnDefinitions>
+                <ColumnDefinition Width="*" />
+                <ColumnDefinition Width="Auto" />
+              </Grid.ColumnDefinitions>
+              <TextBlock Style="{StaticResource FieldLabel}" Text="포트" VerticalAlignment="Bottom" Margin="2,0,0,0" />
+              <Button x:Name="btnRefresh" Grid.Column="1" Content="↻ 새로고침" Click="OnRefreshClick"
+                      MinHeight="24" Padding="8,0" FontSize="11" />
+            </Grid>
+            <ComboBox x:Name="cboPorts" />
+            <TextBlock x:Name="txtPortStatus" Margin="2,6,0,0" FontSize="12" Foreground="{StaticResource Warn}"
+                       TextWrapping="Wrap" Text="포트 검색 중…" />
+            <TextBlock x:Name="txtConsoleWarn" Style="{StaticResource Hint}" Margin="2,4,0,0"
+                       Foreground="{StaticResource Warn}" Visibility="Collapsed" />
+
+            <TextBlock Style="{StaticResource FieldLabel}" Text="플래시 모드" Margin="2,14,0,4" />
+            <StackPanel Orientation="Horizontal">
+              <RadioButton x:Name="rbAppOnly" GroupName="mode" Content="앱만" IsChecked="True"
+                           Checked="OnModeChanged" Margin="0,0,16,0" />
+              <RadioButton x:Name="rbStandard" GroupName="mode" Content="표준" Checked="OnModeChanged" Margin="0,0,16,0" />
+              <RadioButton x:Name="rbFull" GroupName="mode" Content="전체" Checked="OnModeChanged" />
+            </StackPanel>
+            <TextBlock Style="{StaticResource Hint}" FontSize="11" Margin="2,6,0,0"
+                       Text="앱만=부트로더 안 건드림(안전) · 표준=부트로더 빼고 전부 · 전체=부트로더까지(eFuse 위험)" />
+            <CheckBox x:Name="chkForce" Margin="0,10,0,0" FontSize="12"
+                      Content="--force (secure 보드 부트로더 거부 시)" />
+
+            <!-- eFuse 경고(전체 선택 시) — 컴팩트, 전체 설명은 툴팁 -->
+            <Border x:Name="pnlEfuse" Visibility="Collapsed" Margin="0,10,0,0"
+                    Background="{StaticResource DangerDim}" BorderBrush="{StaticResource Danger}"
+                    BorderThickness="1" CornerRadius="6" Padding="10">
+              <Border.ToolTip>
+                <ToolTip MaxWidth="360">
+                  <TextBlock TextWrapping="Wrap" Text="전체 플래시는 부트로더를 다시 씁니다. secure boot eFuse가 아직 안 구워진 보드는 첫 부팅에 영구로 구워집니다(되돌릴 수 없음). 이미 구워진 보드는 부트로더(0x8000 아래) 쓰기를 거부하는데(정상) — 그땐 '표준'이나 '앱만'으로. 부트로더를 꼭 다시 써야 하면 --force가 필요할 수 있습니다." />
+                </ToolTip>
+              </Border.ToolTip>
+              <StackPanel>
+                <TextBlock Foreground="{StaticResource Danger}" FontWeight="Bold" FontSize="12" TextWrapping="Wrap"
+                           Text="⚠ 부트로더 재작성 · eFuse 영구 굽힘 위험(비가역)" />
+                <CheckBox x:Name="chkEfuseAck" Margin="0,8,0,0" FontSize="12" Foreground="{StaticResource Danger}"
+                          Checked="OnModeChanged" Unchecked="OnModeChanged"
+                          Content="위험을 이해했습니다(첫 굽기/복구)" />
+              </StackPanel>
+            </Border>
+
+          </StackPanel>
+        </ScrollViewer>
+      </Border>
+
+      <!-- ===== 우: 실행 + 로그 ===== -->
+      <Border Grid.Column="1" Style="{StaticResource Card}" Margin="12,0,0,0">
+        <Grid>
+          <Grid.RowDefinitions>
+            <RowDefinition Height="Auto" />
+            <RowDefinition Height="Auto" />
+            <RowDefinition Height="Auto" />
+            <RowDefinition Height="Auto" />
+            <RowDefinition Height="*" />
+            <RowDefinition Height="Auto" />
+          </Grid.RowDefinitions>
+
+          <!-- 액션 행 -->
+          <Grid Grid.Row="0">
+            <Grid.ColumnDefinitions>
+              <ColumnDefinition Width="*" />
+              <ColumnDefinition Width="Auto" />
+              <ColumnDefinition Width="Auto" />
+            </Grid.ColumnDefinitions>
+            <Button x:Name="btnFlash" Grid.Column="0" Style="{StaticResource PrimaryButton}"
+                    Height="46" FontSize="15" Content="플래시 시작" Click="OnFlashClick" />
+            <Button x:Name="btnTest" Grid.Column="1" Content="포트 점검" Margin="8,0,0,0" Height="46" Click="OnTestClick" />
+            <Button x:Name="btnStop" Grid.Column="2" Content="중지" Margin="8,0,0,0" Height="46" Width="80"
+                    IsEnabled="False" Click="OnStopClick" />
+          </Grid>
+
+          <!-- 진행바 -->
+          <ProgressBar x:Name="barProgress" Grid.Row="1" Height="10" Margin="0,14,0,0" Minimum="0" Maximum="1" />
+          <Grid Grid.Row="2" Margin="0,6,0,0">
+            <TextBlock x:Name="txtStep" Style="{StaticResource Hint}" HorizontalAlignment="Left" />
+            <TextBlock x:Name="txtPercent" Style="{StaticResource Hint}" HorizontalAlignment="Right" Text="0%" />
+          </Grid>
+
+          <!-- 다운로드 모드 안내 strip -->
+          <Border Grid.Row="3" Margin="0,12,0,0" Background="{StaticResource SurfaceAlt}" CornerRadius="6" Padding="10,7">
+            <TextBlock x:Name="txtDlMode" Style="{StaticResource Hint}" Foreground="{StaticResource Text}" />
+          </Border>
+
+          <!-- 로그(채움) -->
+          <TextBox x:Name="txtLog" Grid.Row="4" Margin="0,12,0,0" IsReadOnly="True"
+                   FontFamily="Consolas" FontSize="12" Background="#FF15161A"
+                   Foreground="#FFCFD3D8" BorderBrush="{StaticResource Border}"
+                   VerticalScrollBarVisibility="Auto" HorizontalScrollBarVisibility="Auto"
+                   TextWrapping="NoWrap" VerticalContentAlignment="Top" />
+
+          <!-- 결과 배너 -->
+          <Border x:Name="pnlResult" Grid.Row="5" Visibility="Collapsed" Margin="0,12,0,0"
+                  CornerRadius="8" Padding="14" BorderThickness="1">
+            <TextBlock x:Name="txtResult" TextWrapping="Wrap" FontSize="13" />
+          </Border>
+        </Grid>
+      </Border>
+    </Grid>
+  </Grid>
+</Window>
diff --git a/DB720Flasher/MainWindow.xaml.cs b/DB720Flasher/MainWindow.xaml.cs
new file mode 100644
index 0000000..362cdb5
--- /dev/null
+++ b/DB720Flasher/MainWindow.xaml.cs
@@ -0,0 +1,476 @@
+using System.IO;
+using System.Windows;
+using System.Windows.Controls;
+using System.Windows.Interop;
+using System.Windows.Media;
+using System.Windows.Media.Imaging;
+using System.Windows.Threading;
+using Microsoft.Win32;
+
+namespace DB720Flasher;
+
+public partial class MainWindow : Window
+{
+    string _baseDir = "";
+    string _esptoolPath = "esptool";
+    string? _fwFolder;
+    List<FirmwareItem> _apps = new();
+    List<FlashProfile> _builtins = new();
+    List<FlashProfile> _models = new();
+    FlashProfile? _profile;
+    List<ComPortInfo> _ports = new();
+    CancellationTokenSource? _cts;
+    bool _busy, _ready, _refreshing;
+    readonly DispatcherTimer _debounce;
+    readonly DispatcherTimer _watch;
+    string[] _portSnapshot = Array.Empty<string>();
+    string? _shotPath;
+
+    public MainWindow()
+    {
+        InitializeComponent();
+
+        _debounce = new DispatcherTimer { Interval = TimeSpan.FromMilliseconds(450) };
+        _debounce.Tick += async (_, __) => { _debounce.Stop(); if (!_busy) await RefreshPortsAsync(); };
+
+        _watch = new DispatcherTimer { Interval = TimeSpan.FromSeconds(1) };
+        _watch.Tick += OnWatchTick;
+
+        var args = Environment.GetCommandLineArgs();
+        int si = Array.IndexOf(args, "--shot");
+        if (si >= 0 && si + 1 < args.Length) _shotPath = args[si + 1];
+
+        Loaded += OnLoaded;
+    }
+
+    async void OnLoaded(object? sender, RoutedEventArgs e)
+    {
+        _baseDir = AppContext.BaseDirectory;
+        _esptoolPath = EsptoolRunner.Locate(_baseDir, null);
+        _builtins = ProfileStore.BuiltIns();
+
+        cboModel.SelectionChanged += (_, __) => OnModelChanged();
+        cboApps.SelectionChanged += (_, __) => UpdateFlashEnabled();
+        cboPorts.SelectionChanged += (_, __) => { UpdatePortHint(); UpdateConsoleWarn(); UpdateFlashEnabled(); };
+
+        var fwFolder = FirmwareCatalog.AutoLocate(_baseDir) ?? FirmwareCatalog.AutoLocate(Directory.GetCurrentDirectory());
+        if (fwFolder is not null) LoadFirmware(fwFolder);
+        else
+        {
+            txtFwFolder.Text = "(firmware 폴더를 찾지 못함 — '폴더…' 로 지정)";
+            cboModel.ItemsSource = _builtins;
+            cboModel.SelectedItem = _builtins.FirstOrDefault();
+        }
+
+        _ready = true;
+        OnModeChanged(this, new RoutedEventArgs());
+        await RefreshPortsAsync();
+        _ = ProbeEsptoolAsync();
+
+        _portSnapshot = CurrentPortNames();
+        _watch.Start();
+
+        if (_shotPath is not null) await CaptureAndExitAsync(_shotPath);
+    }
+
+    protected override void OnSourceInitialized(EventArgs e)
+    {
+        base.OnSourceInitialized(e);
+        (PresentationSource.FromVisual(this) as HwndSource)?.AddHook(WndProc);
+    }
+
+    const int WM_DEVICECHANGE = 0x0219;
+    IntPtr WndProc(IntPtr hwnd, int msg, IntPtr wParam, IntPtr lParam, ref bool handled)
+    {
+        if (msg == WM_DEVICECHANGE) { _debounce.Stop(); _debounce.Start(); }
+        return IntPtr.Zero;
+    }
+
+    async void OnWatchTick(object? sender, EventArgs e)
+    {
+        var now = CurrentPortNames();
+        if (now.SequenceEqual(_portSnapshot)) return;
+        _portSnapshot = now;
+        if (!_busy) await RefreshPortsAsync();
+    }
+
+    static string[] CurrentPortNames()
+    {
+        try { var n = System.IO.Ports.SerialPort.GetPortNames(); Array.Sort(n); return n; }
+        catch { return Array.Empty<string>(); }
+    }
+
+    // ===== 펌웨어 폴더 + 모델 =====
+    void LoadFirmware(string folder)
+    {
+        _fwFolder = folder;
+        txtFwFolder.Text = folder;
+        _apps = FirmwareCatalog.LoadApps(folder);
+        cboApps.ItemsSource = _apps;
+        cboApps.SelectedItem = _apps.FirstOrDefault();
+
+        var models = new List<FlashProfile>(_builtins);
+        FlashProfile? pick;
+        var fileProf = ProfileStore.LoadFromFolder(folder);
+        if (fileProf is not null)
+        {
+            fileProf.Name = $"{fileProf.Name}  (폴더 flash.json)";
+            models.Insert(0, fileProf);
+            pick = fileProf;
+        }
+        else
+        {
+            pick = ProfileStore.MatchByApp(_apps.Select(a => a.FileName), _builtins);
+        }
+        _models = models;
+        cboModel.ItemsSource = _models;
+        cboModel.SelectedItem = pick ?? _models.FirstOrDefault();
+    }
+
+    void OnModelChanged()
+    {
+        _profile = cboModel.SelectedItem as FlashProfile ?? _builtins.FirstOrDefault();
+        if (_profile is null) return;
+        txtProfile.Text = "설정: " + _profile.Summary + (_profile.FromFile ? "  · 폴더 flash.json" : "  · 빌트인");
+        txtDlMode.Text = _profile.DownloadModeHint ?? "(안내 없음)";
+        SelectPreferredPort((cboPorts.SelectedItem as ComPortInfo)?.PortName);
+        UpdatePortHint();
+        UpdateConsoleWarn();
+        UpdateFlashEnabled();
+    }
+
+    void OnBrowseClick(object sender, RoutedEventArgs e)
+    {
+        var dlg = new OpenFolderDialog { Title = "펌웨어 폴더 선택" };
+        if (_fwFolder is not null && Directory.Exists(_fwFolder)) dlg.InitialDirectory = _fwFolder;
+        if (dlg.ShowDialog(this) == true) LoadFirmware(dlg.FolderName);
+    }
+
+    // ===== 포트 =====
+    async Task RefreshPortsAsync()
+    {
+        if (_refreshing) return;
+        _refreshing = true;
+        try
+        {
+            string? prev = (cboPorts.SelectedItem as ComPortInfo)?.PortName;
+            List<ComPortInfo> ports;
+            try { ports = await Task.Run(PortScanner.Scan); } catch { ports = new(); }
+            _ports = ports;
+            cboPorts.ItemsSource = ports;        // 전부 표시(제외 없음)
+            SelectPreferredPort(prev);
+            UpdatePortHint();
+            UpdateConsoleWarn();
+            UpdateFlashEnabled();
+        }
+        finally { _refreshing = false; }
+    }
+
+    void SelectPreferredPort(string? prev)
+    {
+        var list = (cboPorts.ItemsSource as IEnumerable<ComPortInfo>)?.ToList() ?? new();
+        // JTAG/권장 포트 중 가장 높은 번호(재열거된 최신)를 우선 선택 — 유령(옛 번호) 회피
+        var pref = list
+            .Where(p => p.IsJtag || (_profile is not null && p.Matches(_profile.FlashPortHint)))
+            .OrderByDescending(p => p.Number)
+            .FirstOrDefault();
+        cboPorts.SelectedItem = pref
+            ?? list.FirstOrDefault(p => p.PortName == prev)
+            ?? list.FirstOrDefault();
+    }
+
+    /// <summary>선택 포트가 유령이면(열기 실패) 살아있는 JTAG/권장 포트로 자동 전환해 돌려준다.</summary>
+    async Task<ComPortInfo?> ResolveLivePortAsync(ComPortInfo sel)
+    {
+        if (await Task.Run(() => PortScanner.CanOpen(sel.PortName))) return sel;
+
+        AppendLog($"[포트] {sel.PortName} 를 열 수 없음 — 보드 리셋으로 번호가 바뀐 듯. 살아있는 포트 탐색…");
+        var ports = await Task.Run(PortScanner.Scan);
+        foreach (var p in ports
+                     .Where(p => p.IsJtag || (_profile is not null && p.Matches(_profile.FlashPortHint)))
+                     .OrderByDescending(p => p.Number))
+        {
+            if (string.Equals(p.PortName, sel.PortName, StringComparison.OrdinalIgnoreCase)) continue;
+            if (await Task.Run(() => PortScanner.CanOpen(p.PortName)))
+            {
+                AppendLog($"[포트] → {p.PortName} 로 자동 전환");
+                _ports = ports;
+                cboPorts.ItemsSource = ports;
+                cboPorts.SelectedItem = ports.FirstOrDefault(x => x.PortName == p.PortName);
+                return cboPorts.SelectedItem as ComPortInfo;
+            }
+        }
+        return null;
+    }
+
+    void UpdatePortHint()
+    {
+        var sel = cboPorts.SelectedItem as ComPortInfo;
+        var jtags = _ports.Where(p => p.IsJtag).ToList();
+        string multi = jtags.Count > 1
+            ? $"  ·  JTAG {jtags.Count}개(리셋으로 번호 바뀜) — 안 되면 자동으로 다른 번호 시도"
+            : "";
+
+        if (sel is null)
+        {
+            txtPortStatus.Foreground = GetBrush("Danger");
+            txtPortStatus.Text = "포트 없음 — 케이블을 연결하세요 (자동 감지 대기 중)";
+        }
+        else if (sel.IsJtag)
+        {
+            txtPortStatus.Foreground = GetBrush("Success");
+            txtPortStatus.Text = $"✓ {sel.PortName} 선택됨 — USB-JTAG (303A:1001) 자동 감지{multi}";
+        }
+        else if (_profile is not null && sel.Matches(_profile.FlashPortHint))
+        {
+            txtPortStatus.Foreground = GetBrush("Success");
+            txtPortStatus.Text = $"✓ {sel.PortName} 선택됨 — {sel.Kind} (모델 권장 포트){multi}";
+        }
+        else
+        {
+            var liveJtag = jtags.OrderByDescending(p => p.Number).FirstOrDefault();
+            txtPortStatus.Foreground = GetBrush("Warn");
+            txtPortStatus.Text = $"{sel.PortName} 선택됨 — {sel.Kind}. 모델에 맞는 포트인지 확인하세요"
+                + (liveJtag is not null ? $" (JTAG {liveJtag.PortName}도 있음)" : "");
+        }
+    }
+
+    void UpdateConsoleWarn()
+    {
+        var sel = cboPorts.SelectedItem as ComPortInfo;
+        // FlashPortHint 가 있는(=JTAG로 굽는) 모델에서만, 콘솔 포트를 고르면 경고. 막지는 않음.
+        if (_profile?.FlashPortHint is not null && _profile.ConsolePortHint is not null
+            && sel is not null && sel.Matches(_profile.ConsolePortHint))
+        {
+            txtConsoleWarn.Visibility = Visibility.Visible;
+            txtConsoleWarn.Text = $"※ {sel.PortName}({sel.Kind})는 이 모델에선 디버그 콘솔일 수 있습니다. 플래시는 보통 JTAG로 합니다 — 의도한 거면 그대로 진행하세요.";
+        }
+        else txtConsoleWarn.Visibility = Visibility.Collapsed;
+    }
+
+    async void OnRefreshClick(object sender, RoutedEventArgs e) => await RefreshPortsAsync();
+
+    // ===== 모드 =====
+    FlashMode CurrentMode() =>
+        rbFull.IsChecked == true ? FlashMode.Full
+        : rbStandard.IsChecked == true ? FlashMode.Standard
+        : FlashMode.AppOnly;
+
+    void OnModeChanged(object sender, RoutedEventArgs e)
+    {
+        if (!_ready) return;
+        pnlEfuse.Visibility = CurrentMode() == FlashMode.Full ? Visibility.Visible : Visibility.Collapsed;
+        UpdateFlashEnabled();
+    }
+
+    void UpdateFlashEnabled()
+    {
+        if (!_ready) return;
+        bool ok = !_busy
+            && cboPorts.SelectedItem is ComPortInfo
+            && cboApps.SelectedItem is FirmwareItem
+            && _profile is not null
+            && _fwFolder is not null
+            && FirmwareCatalog.MissingFor(_fwFolder, _profile, CurrentMode()) is null;
+        if (CurrentMode() == FlashMode.Full && chkEfuseAck.IsChecked != true) ok = false;
+        btnFlash.IsEnabled = ok;
+    }
+
+    // ===== 실행 =====
+    async void OnFlashClick(object sender, RoutedEventArgs e)
+    {
+        if (_profile is null || _fwFolder is null) return;
+        if (cboPorts.SelectedItem is not ComPortInfo port) { Info("포트를 선택하세요."); return; }
+        if (cboApps.SelectedItem is not FirmwareItem app) { Info("올릴 앱을 선택하세요."); return; }
+        var mode = CurrentMode();
+        if (FirmwareCatalog.MissingFor(_fwFolder, _profile, mode) is string miss) { Info($"이 모드에 필요한 파일이 없습니다: {miss}"); return; }
+
+        // 로그/진행 초기화 후 '살아있는' 포트 확인 — 유령 COM(번호 바뀜) 자동 회피
+        HideResult();
+        txtLog.Clear();
+        barProgress.Value = 0; txtPercent.Text = "0%"; txtStep.Text = "";
+
+        var live = await ResolveLivePortAsync(port);
+        if (live is null)
+        {
+            ShowResultBox(false, "포트를 열 수 없습니다. 보드 리셋으로 COM 번호가 바뀌었거나(유령 포트) 다른 프로그램이 포트를 잡고 있을 수 있습니다 — USB 케이블을 다시 꽂고 '↻ 새로고침' 후 다시 시도하세요.");
+            return;
+        }
+        port = live;
+
+        string modeName = mode switch { FlashMode.AppOnly => "앱만", FlashMode.Standard => "표준", _ => "전체" };
+        string msg = $"모델:  {_profile.Name}\n포트:  {port.PortName} ({port.Kind})\n앱:    {app.FileName}\n모드:  {modeName} 플래시{(chkForce.IsChecked == true ? "  (--force)" : "")}";
+        if (mode == FlashMode.Full)
+            msg += "\n\n★ 전체 플래시는 부트로더를 다시 씁니다. eFuse 미굽힘 보드는 첫 부팅에 영구로 구워집니다(비가역).";
+        if (MessageBox.Show(this, msg + "\n\n진행할까요?", "플래시 확인",
+                MessageBoxButton.YesNo,
+                mode == FlashMode.Full ? MessageBoxImage.Warning : MessageBoxImage.Question) != MessageBoxResult.Yes)
+            return;
+
+        var req = new FlashRequest
+        {
+            Port = port.PortName,
+            Mode = mode,
+            AppPath = app.FullPath,
+            FirmwareFolder = _fwFolder,
+            Profile = _profile,
+            Force = chkForce.IsChecked == true,
+        };
+
+        SetBusy(true);
+        _cts = new CancellationTokenSource();
+
+        var runner = MakeRunner();
+        try
+        {
+            var res = await runner.RunAsync(req, _cts.Token);
+            ShowResult(res);
+        }
+        catch (OperationCanceledException)
+        {
+            AppendLog("\n■ 중지됨");
+            ShowResultBox(false, "중지됨 — 플래시가 중간에 멈췄습니다. 보드 상태가 불완전할 수 있으니 다시 하세요.");
+        }
+        catch (Exception ex)
+        {
+            AppendLog("\n✗ 오류: " + ex.Message);
+            ShowResultBox(false, "오류: " + ex.Message);
+        }
+        finally
+        {
+            _cts?.Dispose(); _cts = null;
+            SetBusy(false);
+        }
+    }
+
+    async void OnTestClick(object sender, RoutedEventArgs e)
+    {
+        if (_profile is null) { Info("모델을 선택하세요."); return; }
+        if (cboPorts.SelectedItem is not ComPortInfo port) { Info("점검할 포트를 선택하세요."); return; }
+        HideResult();
+        txtLog.Clear();
+        var live = await ResolveLivePortAsync(port);
+        if (live is null) { ShowResultBox(false, "포트를 열 수 없습니다 — USB 케이블을 다시 꽂고 '↻ 새로고침' 후 다시 시도하세요."); return; }
+        port = live;
+        SetBusy(true);
+        txtStep.Text = "연결 점검";
+        _cts = new CancellationTokenSource();
+
+        var runner = MakeRunner();
+        try
+        {
+            bool ok = await runner.TestConnectionAsync(_profile, port.PortName, _cts.Token);
+            ShowResultBox(ok, ok
+                ? $"✓ {port.PortName} 연결 OK — 플래시 준비됨."
+                : $"✗ {port.PortName} 연결 실패 — 케이블/포트·다운로드 모드 진입을 확인하세요. 다른 프로그램이 포트를 잡고 있을 수 있습니다.");
+        }
+        catch (OperationCanceledException) { AppendLog("\n■ 중지됨"); }
+        catch (Exception ex) { ShowResultBox(false, "오류: " + ex.Message); }
+        finally { _cts?.Dispose(); _cts = null; SetBusy(false); }
+    }
+
+    void OnStopClick(object sender, RoutedEventArgs e)
+    {
+        AppendLog("\n■ 중지 요청…");
+        _cts?.Cancel();
+    }
+
+    EsptoolRunner MakeRunner()
+    {
+        var runner = new EsptoolRunner(_esptoolPath);
+        runner.Log += s => Dispatcher.BeginInvoke(() => AppendLog(s));
+        runner.Progress += (p, t) => Dispatcher.BeginInvoke(() =>
+        {
+            barProgress.Value = p;
+            txtPercent.Text = $"{p * 100:0}%";
+            txtStep.Text = t;
+        });
+        return runner;
+    }
+
+    // ===== 상태 표시 =====
+    void SetBusy(bool busy)
+    {
+        _busy = busy;
+        foreach (Control c in new Control[]
+                 { cboModel, cboApps, cboPorts, btnRefresh, btnTest, btnBrowse, rbAppOnly, rbStandard, rbFull, chkForce, chkEfuseAck })
+            c.IsEnabled = !busy;
+        btnStop.IsEnabled = busy;
+        if (busy) btnFlash.IsEnabled = false; else UpdateFlashEnabled();
+    }
+
+    void ShowResult(FlashResult res)
+    {
+        if (res.Success)
+        {
+            string tip = _profile is { NoStub: true }
+                ? "\n• USB-JTAG 케이블을 뽑고 전원을 재인가하면 확실히 정상 부팅합니다."
+                : "";
+            ShowResultBox(true, "✓ 플래시 완료. 보드 전원을 재인가(재부팅)하세요." + tip);
+        }
+        else if (res.BootloaderRejected)
+        {
+            ShowResultBox(false,
+                $"부트로더 쓰기를 거부했습니다 (rc={res.ExitCode}).\n" +
+                "이미 secure boot가 구워진 보드면 '정상'입니다 — 모드를 '표준'이나 '앱만'으로 바꿔 다시 하세요(부트로더 건너뜀). 꼭 부트로더를 써야 하면 '--force'를 켜세요.");
+        }
+        else
+        {
+            ShowResultBox(false,
+                $"단계 실패: {res.FailedStep} (rc={res.ExitCode}).\n" +
+                "로그를 확인하세요. 포트·케이블, 다운로드 모드 진입, 모델 선택을 점검하고 재시도하세요.");
+        }
+    }
+
+    void ShowResultBox(bool ok, string text)
+    {
+        pnlResult.Visibility = Visibility.Visible;
+        pnlResult.BorderBrush = GetBrush(ok ? "Success" : "Danger");
+        pnlResult.Background = GetBrush(ok ? "SuccessDim" : "DangerDim");
+        txtResult.Foreground = GetBrush("Text");
+        txtResult.Text = text;
+    }
+
+    void HideResult() => pnlResult.Visibility = Visibility.Collapsed;
+    void AppendLog(string s) { txtLog.AppendText(s + "\n"); txtLog.ScrollToEnd(); }
+
+    async Task ProbeEsptoolAsync()
+    {
+        var (rc, text) = await EsptoolRunner.Capture(_esptoolPath, "version");
+        string tag = _esptoolPath.Contains(@"\tools\esptool\", StringComparison.OrdinalIgnoreCase)
+            ? "동봉" : (Path.IsPathRooted(_esptoolPath) ? "설치본" : "PATH");
+        if (rc == 0)
+        {
+            var ver = text.Split('\n')[0].Trim();
+            txtEsptool.Text = $"{ver} · {tag} · {_esptoolPath}";
+        }
+        else
+        {
+            txtEsptool.Foreground = GetBrush("Warn");
+            txtEsptool.Text = $"⚠ esptool 실행 불가 ({_esptoolPath}) — tools\\esptool\\ 에 동봉하거나 설치가 필요합니다.";
+        }
+    }
+
+    // ===== 디버그용 화면 캡처(--shot 경로) =====
+    async Task CaptureAndExitAsync(string path)
+    {
+        await Task.Delay(1100);
+        try
+        {
+            UpdateLayout();
+            int w = Math.Max(1, (int)Math.Ceiling(ActualWidth));
+            int h = Math.Max(1, (int)Math.Ceiling(ActualHeight));
+            var rtb = new RenderTargetBitmap(w, h, 96, 96, PixelFormats.Pbgra32);
+            rtb.Render(this);
+            var enc = new PngBitmapEncoder();
+            enc.Frames.Add(BitmapFrame.Create(rtb));
+            using var fs = File.Create(path);
+            enc.Save(fs);
+        }
+        catch { }
+        Application.Current.Shutdown();
+    }
+
+    void Info(string m) => MessageBox.Show(this, m, "확인", MessageBoxButton.OK, MessageBoxImage.Information);
+    Brush GetBrush(string key) => (Brush)FindResource(key);
+}
diff --git a/DB720Flasher/Models.cs b/DB720Flasher/Models.cs
new file mode 100644
index 0000000..55af563
--- /dev/null
+++ b/DB720Flasher/Models.cs
@@ -0,0 +1,40 @@
+namespace DB720Flasher;
+
+public sealed class ComPortInfo
+{
+    public required string PortName { get; init; }       // "COM4"
+    public required string FriendlyName { get; init; }   // Win32 PnP 이름
+    public required string DeviceId { get; init; }       // USB\VID_303A&PID_1001\...
+    public int Number { get; init; }
+    public string? Vid { get; init; }
+    public string? Pid { get; init; }
+    public string Kind { get; init; } = "USB 직렬";       // "USB-JTAG (내장)", "CP210x", "CH340", "FTDI" …
+
+    public bool IsJtag => Vid == "303A" && Pid == "1001";
+    public string VidPid => Vid is null || Pid is null ? "" : $"{Vid}:{Pid}";
+    public bool Matches(string? hint)
+        => !string.IsNullOrEmpty(hint) && string.Equals(VidPid, hint, StringComparison.OrdinalIgnoreCase);
+
+    public string Display => $"{PortName}  ·  {Kind}";
+    public override string ToString() => Display;
+}
+
+/// <summary>플래시 모드.</summary>
+public enum FlashMode
+{
+    AppOnly,   // 앱만 (+ 프로파일이 지정하면 otadata erase) — 권장
+    Standard,  // 부트로더 제외 전부 (파티션+ota_data+앱(+www))
+    Full,      // 부트로더까지 전부 (eFuse 위험)
+}
+
+public sealed class FirmwareItem
+{
+    public required string FileName { get; init; }
+    public required string FullPath { get; init; }
+    public long Size { get; init; }
+    public string? Note { get; init; }
+
+    public string SizeText => Size >= 1_048_576 ? $"{Size / 1048576.0:0.0}MB" : $"{Size / 1024.0:0}KB";
+    public string Display => Note is null ? $"{FileName}  ({SizeText})" : $"{FileName}  ·  {Note}";
+    public override string ToString() => Display;
+}
diff --git a/DB720Flasher/Profile.cs b/DB720Flasher/Profile.cs
new file mode 100644
index 0000000..3a4a6a7
--- /dev/null
+++ b/DB720Flasher/Profile.cs
@@ -0,0 +1,51 @@
+namespace DB720Flasher;
+
+/// <summary>flash.json 의 한 영역 — 어떤 파일을 flash 어느 주소에 쓰는지.</summary>
+public sealed class FwRegion
+{
+    public string? File { get; set; }              // 보조 파일명 (app=true 면 비움)
+    public bool App { get; set; }                  // 앱 영역 표시
+    public string Offset { get; set; } = "0x0";
+    public string Kind { get; set; } = "support";  // bootloader | support | app
+}
+
+/// <summary>
+/// 모델 프로파일 — 칩·offset·플래시 방식을 한 곳에 담는다.
+/// firmware 폴더의 flash.json 으로 덮어쓰거나, 빌트인을 그대로 쓴다.
+/// </summary>
+public sealed class FlashProfile
+{
+    public string Name { get; set; } = "Custom";
+    public string Chip { get; set; } = "esp32";        // esp32 | esp32s3 | esp32p4 | ...
+    public int Baud { get; set; } = 921600;
+    public bool NoStub { get; set; }                   // DB720(SDM)=true
+    public bool PerRegion { get; set; }                // DB720=true(영역별 개별 호출), 클래식=false(한 번에)
+    public int ConnectAttempts { get; set; } = 10;
+    public string? FlashSize { get; set; }             // DB720="16MB"; null=자동(스텁)
+    public string? FlashMode { get; set; }             // DB720="dio"
+    public string? FlashFreq { get; set; }             // DB720="80m"
+    public string Before { get; set; } = "default-reset";
+    public string After { get; set; } = "hard-reset";
+    public bool AppOnlyErasesOtadata { get; set; }     // DB720=true
+    public string OtadataOffset { get; set; } = "0x11000";
+    public string OtadataSize { get; set; } = "0x2000";
+    public List<FwRegion> Regions { get; set; } = new();
+    public string? FlashPortHint { get; set; }         // "303A:1001" — 자동선택 우선
+    public string? ConsolePortHint { get; set; }       // "10C4:EA60" — 경고만(막지 않음)
+    public string? DownloadModeHint { get; set; }      // 다운로드 모드 진입 안내
+    public string? Notes { get; set; }
+
+    public bool FromFile { get; set; }                 // 폴더 flash.json 출처면 true(런타임)
+
+    public FwRegion? AppRegion => Regions.FirstOrDefault(r => r.App);
+    public FwRegion? Bootloader => Regions.FirstOrDefault(r => r.Kind == "bootloader");
+    public bool HasBootloader => Bootloader?.File is not null;
+    public IEnumerable<FwRegion> SupportRegions => Regions.Where(r => !r.App && r.File is not null);
+    public string AppOffset => AppRegion?.Offset ?? "0x20000";
+
+    public string Summary =>
+        $"{Chip} · {(NoStub ? "no-stub" : "stub")} · {Baud}" +
+        (FlashPortHint is not null ? $" · 포트 {FlashPortHint}" : "");
+
+    public override string ToString() => Name;
+}
diff --git a/DB720Flasher/Services/EsptoolRunner.cs b/DB720Flasher/Services/EsptoolRunner.cs
new file mode 100644
index 0000000..3152ac9
--- /dev/null
+++ b/DB720Flasher/Services/EsptoolRunner.cs
@@ -0,0 +1,261 @@
+using System.Diagnostics;
+using System.Globalization;
+using System.IO;
+using System.Text;
+using System.Text.RegularExpressions;
+
+namespace DB720Flasher;
+
+public sealed class FlashStep
+{
+    public required string Title { get; init; }
+    public required List<string> Args { get; init; }   // 서브커맨드 + 인자 (전역옵션·--after 제외)
+    public long Bytes { get; init; }
+    public bool TouchesBootloader { get; init; }
+}
+
+public sealed class FlashRequest
+{
+    public required string Port { get; init; }
+    public required FlashMode Mode { get; init; }
+    public required string AppPath { get; init; }
+    public required string FirmwareFolder { get; init; }
+    public required FlashProfile Profile { get; init; }
+    public bool Force { get; init; }
+}
+
+public sealed class FlashResult
+{
+    public bool Success { get; init; }
+    public string? FailedStep { get; init; }
+    public int ExitCode { get; init; }
+    public bool BootloaderRejected { get; init; }
+}
+
+/// <summary>
+/// esptool v5.x CLI(하이픈 문법)로 플래시한다. 칩·baud·스텁·offset·쓰기방식은 프로파일이 결정.
+/// DB720: no-stub + 영역별 개별 호출 + 마지막 hard-reset(SDM). 클래식: 스텁 + 한 번에.
+/// </summary>
+public sealed class EsptoolRunner
+{
+    readonly string _esptool;
+    public string EsptoolPath => _esptool;
+
+    public event Action<string>? Log;
+    public event Action<double, string>? Progress;
+
+    public EsptoolRunner(string esptoolPath) => _esptool = esptoolPath;
+
+    public static string Locate(string baseDir, string? configured)
+    {
+        if (!string.IsNullOrWhiteSpace(configured) && File.Exists(configured)) return configured!;
+        var bundled = Path.Combine(baseDir, "tools", "esptool", "esptool.exe");
+        if (File.Exists(bundled)) return bundled;
+        return "esptool";
+    }
+
+    static List<string> Common(FlashProfile p, string port, string after)
+    {
+        var c = new List<string>
+        {
+            "--chip", p.Chip, "-p", port, "-b", p.Baud.ToString(CultureInfo.InvariantCulture),
+            "--before", p.Before, "--after", after,
+            "--connect-attempts", p.ConnectAttempts.ToString(CultureInfo.InvariantCulture),
+        };
+        if (p.NoStub) c.Add("--no-stub");
+        return c;
+    }
+
+    static List<string> WriteFlashArgs(FlashProfile p, IEnumerable<(string off, string file)> pairs, bool force)
+    {
+        var a = new List<string> { "write-flash" };
+        if (p.FlashMode is not null) { a.Add("-fm"); a.Add(p.FlashMode); }
+        if (p.FlashSize is not null) { a.Add("-fs"); a.Add(p.FlashSize); }
+        if (p.FlashFreq is not null) { a.Add("-ff"); a.Add(p.FlashFreq); }
+        if (force) a.Add("--force");
+        foreach (var (off, file) in pairs) { a.Add(off); a.Add(file); }
+        return a;
+    }
+
+    static long ParseOff(string s)
+        => s.StartsWith("0x", StringComparison.OrdinalIgnoreCase)
+            && long.TryParse(s.AsSpan(2), NumberStyles.HexNumber, CultureInfo.InvariantCulture, out var v) ? v
+            : (long.TryParse(s, out var d) ? d : long.MaxValue);
+
+    public static List<FlashStep> BuildSteps(FlashRequest r)
+    {
+        var p = r.Profile;
+        bool includeBoot = r.Mode == FlashMode.Full;
+        bool supportToo = r.Mode != FlashMode.AppOnly;
+
+        var items = new List<(string off, string file)>();
+        if (supportToo)
+            foreach (var rg in p.SupportRegions)
+            {
+                if (rg.Kind == "bootloader" && !includeBoot) continue;
+                var path = Path.Combine(r.FirmwareFolder, rg.File!);
+                if (File.Exists(path)) items.Add((rg.Offset, path));
+            }
+        items.Add((p.AppOffset, r.AppPath));
+        items = items.OrderBy(x => ParseOff(x.off)).ToList();
+
+        var bootOff = p.Bootloader?.Offset;
+        var steps = new List<FlashStep>();
+
+        if (p.PerRegion)
+        {
+            foreach (var (off, file) in items)
+                steps.Add(new FlashStep
+                {
+                    Title = $"{Path.GetFileName(file)} @ {off}",
+                    Args = WriteFlashArgs(p, new[] { (off, file) }, r.Force),
+                    Bytes = SafeLen(file),
+                    TouchesBootloader = bootOff is not null && ParseOff(off) == ParseOff(bootOff),
+                });
+        }
+        else
+        {
+            steps.Add(new FlashStep
+            {
+                Title = $"전체 {items.Count}개 영역 한 번에 기록",
+                Args = WriteFlashArgs(p, items, r.Force),
+                Bytes = items.Sum(x => SafeLen(x.file)),
+                TouchesBootloader = includeBoot && p.HasBootloader,
+            });
+        }
+
+        if (r.Mode == FlashMode.AppOnly && p.AppOnlyErasesOtadata)
+        {
+            var erase = new List<string> { "erase-region", p.OtadataOffset, p.OtadataSize };
+            if (r.Force) erase.Add("--force");
+            steps.Add(new FlashStep { Title = $"otadata erase @ {p.OtadataOffset}", Args = erase, Bytes = 0 });
+        }
+        return steps;
+    }
+
+    public async Task<FlashResult> RunAsync(FlashRequest r, CancellationToken ct)
+    {
+        var p = r.Profile;
+        var steps = BuildSteps(r);
+        long total = Math.Max(1, steps.Sum(s => s.Bytes));
+        long done = 0;
+
+        Log?.Invoke($"esptool: {_esptool}");
+        Log?.Invoke($"모델 {p.Name} · 포트 {r.Port} · 모드 {r.Mode}{(r.Force ? " · --force" : "")} · 단계 {steps.Count}개\n");
+
+        for (int i = 0; i < steps.Count; i++)
+        {
+            ct.ThrowIfCancellationRequested();
+            var step = steps[i];
+            bool last = i == steps.Count - 1;
+
+            var args = Common(p, r.Port, last ? p.After : "no-reset");
+            args.AddRange(step.Args);
+
+            Log?.Invoke($"[{i + 1}/{steps.Count}] {step.Title}");
+            Progress?.Invoke((double)done / total, step.Title);
+
+            long stepBase = done;
+            int rc = await RunOnce(args, pct =>
+            {
+                double cur = (stepBase + step.Bytes * pct) / total;
+                Progress?.Invoke(Math.Clamp(cur, 0, 1), step.Title);
+            }, ct);
+
+            if (rc != 0)
+                return new FlashResult { Success = false, FailedStep = step.Title, ExitCode = rc, BootloaderRejected = step.TouchesBootloader };
+
+            done += step.Bytes;
+            Progress?.Invoke((double)done / total, step.Title);
+        }
+
+        Progress?.Invoke(1.0, "완료");
+        return new FlashResult { Success = true };
+    }
+
+    /// <summary>플래시 전 안전 점검 — chip-id로 포트/케이블 확인.</summary>
+    public async Task<bool> TestConnectionAsync(FlashProfile p, string port, CancellationToken ct)
+    {
+        var args = new List<string>
+        {
+            "--chip", p.Chip, "-p", port, "-b", p.Baud.ToString(CultureInfo.InvariantCulture),
+            "--before", p.Before, "--after", "hard-reset", "--connect-attempts", "8",
+        };
+        if (p.NoStub) args.Add("--no-stub");
+        args.Add("chip-id");
+
+        Log?.Invoke($"[점검] {port} ({p.Chip}) 연결 확인…");
+        int rc = await RunOnce(args, _ => { }, ct);
+        Log?.Invoke(rc == 0 ? "[점검] ✓ 연결 OK" : $"[점검] ✗ 연결 실패 (rc={rc})");
+        return rc == 0;
+    }
+
+    static readonly Regex AnsiRe = new(@"\x1B\[[0-9;?]*[ -/]*[@-~]", RegexOptions.Compiled);
+    static readonly Regex PctRe = new(@"(\d{1,3})\s*%", RegexOptions.Compiled);
+
+    async Task<int> RunOnce(List<string> args, Action<double> onPct, CancellationToken ct)
+    {
+        var psi = new ProcessStartInfo
+        {
+            FileName = _esptool,
+            UseShellExecute = false,
+            RedirectStandardOutput = true,
+            RedirectStandardError = true,
+            CreateNoWindow = true,
+            StandardOutputEncoding = Encoding.UTF8,
+            StandardErrorEncoding = Encoding.UTF8,
+        };
+        foreach (var a in args) psi.ArgumentList.Add(a);
+        psi.Environment["PYTHONIOENCODING"] = "utf-8";
+        psi.Environment["PYTHONUNBUFFERED"] = "1";
+
+        using var proc = new Process { StartInfo = psi, EnableRaisingEvents = true };
+
+        void Handle(string? raw)
+        {
+            if (raw is null) return;
+            var line = AnsiRe.Replace(raw, "").TrimEnd();
+            if (line.Length == 0) return;
+            Log?.Invoke(line);
+            var m = PctRe.Match(line);
+            if (m.Success && int.TryParse(m.Groups[1].Value, out var pc))
+                onPct(Math.Clamp(pc / 100.0, 0, 1));
+        }
+
+        proc.OutputDataReceived += (_, e) => Handle(e.Data);
+        proc.ErrorDataReceived += (_, e) => Handle(e.Data);
+
+        try { proc.Start(); }
+        catch (Exception ex) { Log?.Invoke($"✗ esptool 실행 실패: {ex.Message}"); return -999; }
+        proc.BeginOutputReadLine();
+        proc.BeginErrorReadLine();
+
+        using (ct.Register(() => { try { if (!proc.HasExited) proc.Kill(true); } catch { } }))
+            await proc.WaitForExitAsync(ct);
+        return proc.ExitCode;
+    }
+
+    static long SafeLen(string p) { try { return new FileInfo(p).Length; } catch { return 0; } }
+
+    /// <summary>한 번 실행하고 출력을 통째로 받는다(버전 확인용).</summary>
+    public static async Task<(int rc, string text)> Capture(string exe, params string[] args)
+    {
+        try
+        {
+            var psi = new ProcessStartInfo
+            {
+                FileName = exe, UseShellExecute = false,
+                RedirectStandardOutput = true, RedirectStandardError = true,
+                CreateNoWindow = true,
+                StandardOutputEncoding = Encoding.UTF8, StandardErrorEncoding = Encoding.UTF8,
+            };
+            foreach (var a in args) psi.ArgumentList.Add(a);
+            using var p = Process.Start(psi)!;
+            string o = await p.StandardOutput.ReadToEndAsync();
+            string err = await p.StandardError.ReadToEndAsync();
+            await p.WaitForExitAsync();
+            return (p.ExitCode, AnsiRe.Replace((o + err).Trim(), ""));
+        }
+        catch (Exception ex) { return (-999, ex.Message); }
+    }
+}
diff --git a/DB720Flasher/Services/FirmwareCatalog.cs b/DB720Flasher/Services/FirmwareCatalog.cs
new file mode 100644
index 0000000..cfd3d9b
--- /dev/null
+++ b/DB720Flasher/Services/FirmwareCatalog.cs
@@ -0,0 +1,69 @@
+using System.IO;
+
+namespace DB720Flasher;
+
+public static class FirmwareCatalog
+{
+    // 모델 무관하게 보조 파일명은 공통 — 앱 후보 = 이 4개를 뺀 .bin
+    static readonly HashSet<string> Support = new(StringComparer.OrdinalIgnoreCase)
+        { "bootloader.bin", "partition-table.bin", "ota_data_initial.bin", "www_fs.bin" };
+
+    static string? KnownNote(string fileName) => fileName switch
+    {
+        "DIBD720Te_08C_04R020C.bin" => "320×64 (4단20열, 8색) · 부팅 검증됨",
+        "DIBD720Ue_08B_08R040C.bin" => "640×128 (8단40열, 256색) · 미검증",
+        _ => null,
+    };
+
+    /// <summary>폴더의 앱 후보(.bin 중 보조 4종 제외)를 나열.</summary>
+    public static List<FirmwareItem> LoadApps(string folder)
+    {
+        var apps = new List<FirmwareItem>();
+        if (!Directory.Exists(folder)) return apps;
+
+        foreach (var path in Directory.EnumerateFiles(folder, "*.bin"))
+        {
+            var name = Path.GetFileName(path);
+            if (Support.Contains(name)) continue;
+            apps.Add(new FirmwareItem
+            {
+                FileName = name,
+                FullPath = path,
+                Size = SafeLen(path),
+                Note = KnownNote(name),
+            });
+        }
+        apps.Sort((a, b) => string.Compare(a.FileName, b.FileName, StringComparison.OrdinalIgnoreCase));
+        return apps;
+    }
+
+    /// <summary>선택한 모드+프로파일에 필요한 보조 파일이 폴더에 다 있는지. 없으면 빠진 목록.</summary>
+    public static string? MissingFor(string folder, FlashProfile p, FlashMode mode)
+    {
+        if (mode == FlashMode.AppOnly) return null;
+        bool includeBoot = mode == FlashMode.Full;
+        var miss = new List<string>();
+        foreach (var rg in p.SupportRegions)
+        {
+            if (rg.Kind == "bootloader" && !includeBoot) continue;
+            if (!File.Exists(Path.Combine(folder, rg.File!))) miss.Add(rg.File!);
+        }
+        return miss.Count == 0 ? null : string.Join(", ", miss);
+    }
+
+    /// <summary>exe 위치에서 위로 올라가며 firmware\ (bin 포함) 폴더를 찾는다.</summary>
+    public static string? AutoLocate(string startDir)
+    {
+        var dir = new DirectoryInfo(startDir);
+        for (int i = 0; i < 6 && dir is not null; i++)
+        {
+            var candidate = Path.Combine(dir.FullName, "firmware");
+            if (Directory.Exists(candidate) && Directory.EnumerateFiles(candidate, "*.bin").Any())
+                return candidate;
+            dir = dir.Parent;
+        }
+        return null;
+    }
+
+    static long SafeLen(string p) { try { return new FileInfo(p).Length; } catch { return 0; } }
+}
diff --git a/DB720Flasher/Services/PortScanner.cs b/DB720Flasher/Services/PortScanner.cs
new file mode 100644
index 0000000..912677c
--- /dev/null
+++ b/DB720Flasher/Services/PortScanner.cs
@@ -0,0 +1,82 @@
+using System.IO.Ports;
+using System.Management;
+using System.Text.RegularExpressions;
+
+namespace DB720Flasher;
+
+/// <summary>
+/// WMI(Win32_PnPEntity)로 COM 포트를 전부 열거하고 VID/PID로 종류만 라벨링한다.
+/// 어떤 포트도 제외하지 않는다 — JTAG로도, UART(CP210x/CH340/FTDI)로도 플래시할 수 있으므로
+/// 전부 보여주고 사용자가 고른다. JTAG(303A:1001)는 맨 위로 올려 자동선택을 돕는다.
+/// </summary>
+public static partial class PortScanner
+{
+    [GeneratedRegex(@"\(COM(\d+)\)")] private static partial Regex ComRe();
+    [GeneratedRegex(@"VID_([0-9A-Fa-f]{4})")] private static partial Regex VidRe();
+    [GeneratedRegex(@"PID_([0-9A-Fa-f]{4})")] private static partial Regex PidRe();
+
+    public static List<ComPortInfo> Scan()
+    {
+        var list = new List<ComPortInfo>();
+        try
+        {
+            using var searcher = new ManagementObjectSearcher(
+                "SELECT Name, DeviceID FROM Win32_PnPEntity WHERE Name LIKE '%(COM%'");
+            foreach (ManagementBaseObject mo in searcher.Get())
+            {
+                var name = mo["Name"] as string ?? "";
+                var devId = mo["DeviceID"] as string ?? "";
+                var cm = ComRe().Match(name);
+                if (!cm.Success) continue;
+
+                string? vid = VidRe().Match(devId) is { Success: true } v ? v.Groups[1].Value.ToUpperInvariant() : null;
+                string? pid = PidRe().Match(devId) is { Success: true } p ? p.Groups[1].Value.ToUpperInvariant() : null;
+
+                list.Add(new ComPortInfo
+                {
+                    PortName = $"COM{cm.Groups[1].Value}",
+                    Number = int.TryParse(cm.Groups[1].Value, out var n) ? n : 9999,
+                    FriendlyName = name,
+                    DeviceId = devId,
+                    Vid = vid,
+                    Pid = pid,
+                    Kind = KindOf(vid, pid),
+                });
+                mo.Dispose();
+            }
+        }
+        catch { /* WMI 실패 시 빈 목록 */ }
+
+        // JTAG는 맨 위에, 그 중 '최신(번호 높은)' 것을 먼저 — 보드 리셋으로 번호가 올라가면
+        // 옛 번호는 유령 포트가 되므로 높은 번호가 살아있을 확률이 높다.
+        var jtag = list.Where(p => p.IsJtag).OrderByDescending(p => p.Number);
+        var rest = list.Where(p => !p.IsJtag).OrderBy(p => p.Number);
+        return jtag.Concat(rest).ToList();
+    }
+
+    /// <summary>
+    /// 포트를 실제로 열 수 있는지 빠르게 확인(유령 포트 판별).
+    /// DTR/RTS를 건드리지 않아 보드를 리셋하지 않는다.
+    /// </summary>
+    public static bool CanOpen(string portName)
+    {
+        try
+        {
+            using var sp = new SerialPort(portName) { DtrEnable = false, RtsEnable = false };
+            sp.Open();
+            return true;
+        }
+        catch { return false; }
+    }
+
+    static string KindOf(string? vid, string? pid) => (vid, pid) switch
+    {
+        ("303A", "1001") => "USB-JTAG (내장)",
+        ("10C4", _) => "CP210x",
+        ("1A86", "7523") => "CH340",
+        ("1A86", _) => "CH34x/CH9102",
+        ("0403", _) => "FTDI",
+        ("067B", _) => "PL2303",
+        _ => "USB 직렬",
+    };
+}
diff --git a/DB720Flasher/Services/ProfileStore.cs b/DB720Flasher/Services/ProfileStore.cs
new file mode 100644
index 0000000..c39d476
--- /dev/null
+++ b/DB720Flasher/Services/ProfileStore.cs
@@ -0,0 +1,103 @@
+using System.IO;
+using System.Text.Json;
+
+namespace DB720Flasher;
+
+/// <summary>빌트인 모델 프로파일 + 폴더 flash.json 로더 + 앱 파일명 자동매칭.</summary>
+public static class ProfileStore
+{
+    static readonly JsonSerializerOptions JsonOpts = new()
+    {
+        PropertyNameCaseInsensitive = true,
+        ReadCommentHandling = JsonCommentHandling.Skip,
+        AllowTrailingCommas = true,
+    };
+
+    static FwRegion Boot(string off) => new() { File = "bootloader.bin", Offset = off, Kind = "bootloader" };
+    static FwRegion Part() => new() { File = "partition-table.bin", Offset = "0x10000", Kind = "support" };
+    static FwRegion Ota() => new() { File = "ota_data_initial.bin", Offset = "0x11000", Kind = "support" };
+    static FwRegion Www() => new() { File = "www_fs.bin", Offset = "0x420000", Kind = "support" };
+    static FwRegion AppAt(string off = "0x20000") => new() { App = true, Offset = off, Kind = "app" };
+
+    public static List<FlashProfile> BuiltIns() => new()
+    {
+        new FlashProfile
+        {
+            Name = "DB720 (ESP32-P4)", Chip = "esp32p4", Baud = 115200, NoStub = true, PerRegion = true,
+            ConnectAttempts = 30, FlashSize = "16MB", FlashMode = "dio", FlashFreq = "80m",
+            AppOnlyErasesOtadata = true,
+            Regions = { Boot("0x2000"), Part(), Ota(), Www(), AppAt() },
+            FlashPortHint = "303A:1001", ConsolePortHint = "10C4:EA60",
+            DownloadModeHint = "USB-JTAG 케이블 연결. 포트가 안 잡히면 케이블만 다시 꽂으면 됩니다(자동 감지).",
+            Notes = "secure_release · db250513 서명. 영역별 개별 호출(SDM). 부트로더(0x2000)는 이미 구워진 보드면 거부될 수 있음(정상 → 표준/앱만 사용).",
+        },
+        new FlashProfile
+        {
+            Name = "DB402S (ESP32-S3)", Chip = "esp32s3", Baud = 921600,
+            Regions = { Boot("0x0000"), Part(), Ota(), AppAt() },
+            ConsolePortHint = "10C4:EA60",
+            DownloadModeHint = "TTL(COM2) 연결. SW1 누른 상태에서 SW2 눌렀다 떼고 SW1 떼면 다운로드 모드 진입.",
+            Notes = "esp32-s3. 부트로더 offset 0x0000(중요). 스텁 921600 · 한 번에 기록. secure 보드는 부트로더(<0x8000) 거부 → --force 또는 앱만.",
+        },
+        new FlashProfile
+        {
+            Name = "DB400S (ESP32)", Chip = "esp32", Baud = 921600,
+            Regions = { Boot("0x1000"), Part(), Ota(), AppAt() },
+            ConsolePortHint = "10C4:EA60",
+            DownloadModeHint = "TTL(COM2) 연결. SW1 누른 상태에서 SW2 눌렀다 떼고 SW1 떼면 다운로드 모드 진입.",
+            Notes = "esp32 클래식. 부트로더 0x1000. 스텁 921600 · 한 번에. secure 보드는 부트로더(<0x8000) 거부 → --force 또는 앱만.",
+        },
+        new FlashProfile
+        {
+            Name = "DB400Q (ESP32)", Chip = "esp32", Baud = 921600,
+            Regions = { Boot("0x1000"), Part(), Ota(), AppAt() },
+            ConsolePortHint = "10C4:EA60",
+            DownloadModeHint = "TTL(COM2) 연결. SW1 누른 상태에서 SW2 눌렀다 떼고 SW1 떼면 다운로드 모드 진입.",
+            Notes = "esp32 클래식. DB400S와 동일 방식.",
+        },
+        new FlashProfile
+        {
+            Name = "DB300eM (ESP32)", Chip = "esp32", Baud = 921600,
+            Regions = { Boot("0x1000"), Part(), Ota(), AppAt() },
+            ConsolePortHint = "10C4:EA60",
+            DownloadModeHint = "TTL(COM2) 연결. JP1 점퍼핀 단락 후 전원 재인가하면 다운로드 모드 진입.",
+            Notes = "esp32 클래식. JP1 점퍼로 다운로드 진입. web OTA(IP 입력)도 가능.",
+        },
+    };
+
+    /// <summary>폴더의 flash.json 을 읽는다(없으면 null).</summary>
+    public static FlashProfile? LoadFromFolder(string folder)
+    {
+        try
+        {
+            var p = Path.Combine(folder, "flash.json");
+            if (!File.Exists(p)) return null;
+            var prof = JsonSerializer.Deserialize<FlashProfile>(File.ReadAllText(p), JsonOpts);
+            if (prof is not null) prof.FromFile = true;
+            return prof;
+        }
+        catch { return null; }
+    }
+
+    /// <summary>앱 bin 파일명(DIBD720…, DIBD402S… 등)으로 빌트인 프로파일을 추정.</summary>
+    public static FlashProfile? MatchByApp(IEnumerable<string> appFileNames, List<FlashProfile> profiles)
+    {
+        // 더 구체적인 토큰을 먼저 (402S 가 400 보다, 400S 가 400 보다 우선)
+        (string token, string profileTag)[] map =
+        {
+            ("402S", "DB402S"), ("400S", "DB400S"), ("400Q", "DB400Q"),
+            ("300", "DB300"), ("720", "DB720"),
+        };
+        foreach (var name in appFileNames)
+        {
+            var up = name.ToUpperInvariant();
+            foreach (var (token, tag) in map)
+                if (up.Contains(token))
+                {
+                    var hit = profiles.FirstOrDefault(p => p.Name.ToUpperInvariant().Contains(tag));
+                    if (hit is not null) return hit;
+                }
+        }
+        return null;
+    }
+}
diff --git a/DB720Flasher/Themes/Controls.xaml b/DB720Flasher/Themes/Controls.xaml
new file mode 100644
index 0000000..694a120
--- /dev/null
+++ b/DB720Flasher/Themes/Controls.xaml
@@ -0,0 +1,370 @@
+<ResourceDictionary xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
+                    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+                    xmlns:sys="clr-namespace:System;assembly=mscorlib">
+
+  <!-- ===== 디자인 토큰 (전역 규칙: 컨트롤 높이 통일, 인라인 Padding 금지) ===== -->
+  <sys:Double x:Key="Control.Height">34</sys:Double>
+  <CornerRadius x:Key="Control.Radius">6</CornerRadius>
+
+  <!-- 색 (다크) -->
+  <SolidColorBrush x:Key="Bg"          Color="#FF1E1F22" />
+  <SolidColorBrush x:Key="Surface"     Color="#FF2A2C30" />
+  <SolidColorBrush x:Key="SurfaceAlt"  Color="#FF34373C" />
+  <SolidColorBrush x:Key="Border"      Color="#FF44474D" />
+  <SolidColorBrush x:Key="Text"        Color="#FFECECEC" />
+  <SolidColorBrush x:Key="TextSubtle"  Color="#FF9AA0A6" />
+  <SolidColorBrush x:Key="Accent"      Color="#FF3B82F6" />
+  <SolidColorBrush x:Key="AccentHover" Color="#FF60A5FA" />
+  <SolidColorBrush x:Key="Success"     Color="#FF34D399" />
+  <SolidColorBrush x:Key="Warn"        Color="#FFF59E0B" />
+  <SolidColorBrush x:Key="Danger"      Color="#FFEF4444" />
+  <SolidColorBrush x:Key="DangerDim"   Color="#33EF4444" />
+  <SolidColorBrush x:Key="SuccessDim"  Color="#2234D399" />
+  <SolidColorBrush x:Key="PopupBg"     Color="#FF313338" />
+
+  <!-- ===== Button: 전역 스타일만, 인라인 Padding 금지 ===== -->
+  <Style TargetType="Button">
+    <Setter Property="MinHeight" Value="{StaticResource Control.Height}" />
+    <Setter Property="Padding" Value="14,0" />
+    <Setter Property="Foreground" Value="{StaticResource Text}" />
+    <Setter Property="Background" Value="{StaticResource SurfaceAlt}" />
+    <Setter Property="BorderBrush" Value="{StaticResource Border}" />
+    <Setter Property="BorderThickness" Value="1" />
+    <Setter Property="FontSize" Value="13" />
+    <Setter Property="Cursor" Value="Hand" />
+    <Setter Property="SnapsToDevicePixels" Value="True" />
+    <Setter Property="Template">
+      <Setter.Value>
+        <ControlTemplate TargetType="Button">
+          <Border x:Name="b" Background="{TemplateBinding Background}"
+                  BorderBrush="{TemplateBinding BorderBrush}"
+                  BorderThickness="{TemplateBinding BorderThickness}"
+                  CornerRadius="{StaticResource Control.Radius}">
+            <ContentPresenter HorizontalAlignment="Center" VerticalAlignment="Center"
+                              Margin="{TemplateBinding Padding}" TextElement.Foreground="{TemplateBinding Foreground}" />
+          </Border>
+          <ControlTemplate.Triggers>
+            <Trigger Property="IsMouseOver" Value="True">
+              <Setter TargetName="b" Property="Background" Value="{StaticResource Border}" />
+            </Trigger>
+            <Trigger Property="IsEnabled" Value="False">
+              <Setter Property="Opacity" Value="0.45" />
+              <Setter Property="Cursor" Value="Arrow" />
+            </Trigger>
+          </ControlTemplate.Triggers>
+        </ControlTemplate>
+      </Setter.Value>
+    </Setter>
+  </Style>
+
+  <Style x:Key="PrimaryButton" TargetType="Button" BasedOn="{StaticResource {x:Type Button}}">
+    <Setter Property="Background" Value="{StaticResource Accent}" />
+    <Setter Property="BorderBrush" Value="{StaticResource Accent}" />
+    <Setter Property="FontWeight" Value="SemiBold" />
+    <Setter Property="Template">
+      <Setter.Value>
+        <ControlTemplate TargetType="Button">
+          <Border x:Name="b" Background="{TemplateBinding Background}"
+                  BorderBrush="{TemplateBinding BorderBrush}"
+                  BorderThickness="{TemplateBinding BorderThickness}"
+                  CornerRadius="{StaticResource Control.Radius}">
+            <ContentPresenter HorizontalAlignment="Center" VerticalAlignment="Center"
+                              Margin="{TemplateBinding Padding}" TextElement.Foreground="White" />
+          </Border>
+          <ControlTemplate.Triggers>
+            <Trigger Property="IsMouseOver" Value="True">
+              <Setter TargetName="b" Property="Background" Value="{StaticResource AccentHover}" />
+              <Setter TargetName="b" Property="BorderBrush" Value="{StaticResource AccentHover}" />
+            </Trigger>
+            <Trigger Property="IsEnabled" Value="False">
+              <Setter Property="Opacity" Value="0.4" />
+              <Setter Property="Cursor" Value="Arrow" />
+            </Trigger>
+          </ControlTemplate.Triggers>
+        </ControlTemplate>
+      </Setter.Value>
+    </Setter>
+  </Style>
+
+  <Style x:Key="DangerButton" TargetType="Button" BasedOn="{StaticResource PrimaryButton}">
+    <Setter Property="Background" Value="{StaticResource Danger}" />
+    <Setter Property="BorderBrush" Value="{StaticResource Danger}" />
+  </Style>
+
+  <!-- ===== 공용 다크 ScrollBar ===== -->
+  <Style TargetType="Thumb" x:Key="ScrollThumb">
+    <Setter Property="Template">
+      <Setter.Value>
+        <ControlTemplate TargetType="Thumb">
+          <Border CornerRadius="4" Background="{StaticResource Border}" Margin="2" />
+        </ControlTemplate>
+      </Setter.Value>
+    </Setter>
+  </Style>
+  <Style TargetType="RepeatButton" x:Key="ScrollHidden">
+    <Setter Property="Opacity" Value="0" />
+    <Setter Property="Focusable" Value="False" />
+    <Setter Property="IsTabStop" Value="False" />
+    <Setter Property="Template">
+      <Setter.Value>
+        <ControlTemplate TargetType="RepeatButton"><Border Background="Transparent" /></ControlTemplate>
+      </Setter.Value>
+    </Setter>
+  </Style>
+  <Style TargetType="ScrollBar">
+    <Setter Property="Background" Value="Transparent" />
+    <Setter Property="Width" Value="11" />
+    <Setter Property="Template">
+      <Setter.Value>
+        <ControlTemplate TargetType="ScrollBar">
+          <Border Background="Transparent">
+            <Track x:Name="PART_Track" IsDirectionReversed="True">
+              <Track.IncreaseRepeatButton>
+                <RepeatButton Style="{StaticResource ScrollHidden}" Command="ScrollBar.PageDownCommand" />
+              </Track.IncreaseRepeatButton>
+              <Track.DecreaseRepeatButton>
+                <RepeatButton Style="{StaticResource ScrollHidden}" Command="ScrollBar.PageUpCommand" />
+              </Track.DecreaseRepeatButton>
+              <Track.Thumb>
+                <Thumb Style="{StaticResource ScrollThumb}" />
+              </Track.Thumb>
+            </Track>
+          </Border>
+        </ControlTemplate>
+      </Setter.Value>
+    </Setter>
+    <Style.Triggers>
+      <Trigger Property="Orientation" Value="Horizontal">
+        <Setter Property="Width" Value="Auto" />
+        <Setter Property="Height" Value="11" />
+      </Trigger>
+    </Style.Triggers>
+  </Style>
+
+  <!-- ===== ComboBox (완전 다크: 토글·화살표·팝업·항목) ===== -->
+  <Style x:Key="ComboToggle" TargetType="ToggleButton">
+    <Setter Property="Focusable" Value="False" />
+    <Setter Property="ClickMode" Value="Press" />
+    <Setter Property="Template">
+      <Setter.Value>
+        <ControlTemplate TargetType="ToggleButton">
+          <Border x:Name="b" Background="{StaticResource Surface}" BorderBrush="{StaticResource Border}"
+                  BorderThickness="1" CornerRadius="{StaticResource Control.Radius}">
+            <Grid>
+              <Grid.ColumnDefinitions>
+                <ColumnDefinition Width="*" />
+                <ColumnDefinition Width="28" />
+              </Grid.ColumnDefinitions>
+              <Path Grid.Column="1" HorizontalAlignment="Center" VerticalAlignment="Center"
+                    Data="M0,0 L4,4 L8,0 Z" Fill="{StaticResource TextSubtle}" />
+            </Grid>
+          </Border>
+          <ControlTemplate.Triggers>
+            <Trigger Property="IsMouseOver" Value="True">
+              <Setter TargetName="b" Property="BorderBrush" Value="{StaticResource Accent}" />
+            </Trigger>
+          </ControlTemplate.Triggers>
+        </ControlTemplate>
+      </Setter.Value>
+    </Setter>
+  </Style>
+
+  <Style TargetType="ComboBox">
+    <Setter Property="MinHeight" Value="{StaticResource Control.Height}" />
+    <Setter Property="Foreground" Value="{StaticResource Text}" />
+    <Setter Property="FontSize" Value="13" />
+    <Setter Property="SnapsToDevicePixels" Value="True" />
+    <Setter Property="Template">
+      <Setter.Value>
+        <ControlTemplate TargetType="ComboBox">
+          <Grid>
+            <ToggleButton x:Name="Toggle" Style="{StaticResource ComboToggle}"
+                          IsChecked="{Binding IsDropDownOpen, Mode=TwoWay, RelativeSource={RelativeSource TemplatedParent}}" />
+            <ContentPresenter x:Name="ContentSite" IsHitTestVisible="False"
+                              Content="{TemplateBinding SelectionBoxItem}"
+                              ContentTemplate="{TemplateBinding SelectionBoxItemTemplate}"
+                              Margin="11,0,32,0" VerticalAlignment="Center" HorizontalAlignment="Left"
+                              TextElement.Foreground="{StaticResource Text}" />
+            <Popup x:Name="Popup" Placement="Bottom" IsOpen="{TemplateBinding IsDropDownOpen}"
+                   AllowsTransparency="True" Focusable="False" PopupAnimation="Slide">
+              <Border Background="{StaticResource PopupBg}" BorderBrush="{StaticResource Border}"
+                      BorderThickness="1" CornerRadius="6" Margin="0,4,0,4"
+                      MinWidth="{Binding ActualWidth, ElementName=Toggle}"
+                      MaxHeight="{TemplateBinding MaxDropDownHeight}">
+                <ScrollViewer>
+                  <ItemsPresenter KeyboardNavigation.DirectionalNavigation="Contained" Margin="0,3" />
+                </ScrollViewer>
+              </Border>
+            </Popup>
+          </Grid>
+          <ControlTemplate.Triggers>
+            <Trigger Property="IsEnabled" Value="False">
+              <Setter Property="Opacity" Value="0.5" />
+            </Trigger>
+          </ControlTemplate.Triggers>
+        </ControlTemplate>
+      </Setter.Value>
+    </Setter>
+  </Style>
+
+  <Style TargetType="ComboBoxItem">
+    <Setter Property="Foreground" Value="{StaticResource Text}" />
+    <Setter Property="FontSize" Value="13" />
+    <Setter Property="Padding" Value="11,8" />
+    <Setter Property="Template">
+      <Setter.Value>
+        <ControlTemplate TargetType="ComboBoxItem">
+          <Border x:Name="b" Background="Transparent" Padding="{TemplateBinding Padding}"
+                  CornerRadius="4" Margin="4,1">
+            <ContentPresenter TextElement.Foreground="{StaticResource Text}" />
+          </Border>
+          <ControlTemplate.Triggers>
+            <Trigger Property="IsMouseOver" Value="True">
+              <Setter TargetName="b" Property="Background" Value="{StaticResource Border}" />
+            </Trigger>
+            <Trigger Property="IsHighlighted" Value="True">
+              <Setter TargetName="b" Property="Background" Value="{StaticResource Accent}" />
+            </Trigger>
+          </ControlTemplate.Triggers>
+        </ControlTemplate>
+      </Setter.Value>
+    </Setter>
+  </Style>
+
+  <!-- ===== TextBox (다크) ===== -->
+  <Style TargetType="TextBox">
+    <Setter Property="MinHeight" Value="{StaticResource Control.Height}" />
+    <Setter Property="Padding" Value="10,6" />
+    <Setter Property="VerticalContentAlignment" Value="Center" />
+    <Setter Property="Foreground" Value="{StaticResource Text}" />
+    <Setter Property="Background" Value="{StaticResource Surface}" />
+    <Setter Property="BorderBrush" Value="{StaticResource Border}" />
+    <Setter Property="CaretBrush" Value="{StaticResource Text}" />
+    <Setter Property="SelectionBrush" Value="{StaticResource Accent}" />
+    <Setter Property="FontSize" Value="13" />
+    <Setter Property="Template">
+      <Setter.Value>
+        <ControlTemplate TargetType="TextBox">
+          <Border Background="{TemplateBinding Background}" BorderBrush="{TemplateBinding BorderBrush}"
+                  BorderThickness="1" CornerRadius="{StaticResource Control.Radius}">
+            <ScrollViewer x:Name="PART_ContentHost" Focusable="False" Margin="{TemplateBinding Padding}"
+                          VerticalAlignment="{TemplateBinding VerticalContentAlignment}" />
+          </Border>
+          <ControlTemplate.Triggers>
+            <Trigger Property="IsKeyboardFocused" Value="True">
+              <Setter Property="BorderBrush" Value="{StaticResource Accent}" />
+            </Trigger>
+          </ControlTemplate.Triggers>
+        </ControlTemplate>
+      </Setter.Value>
+    </Setter>
+  </Style>
+
+  <!-- ===== CheckBox (다크) ===== -->
+  <Style TargetType="CheckBox">
+    <Setter Property="Foreground" Value="{StaticResource Text}" />
+    <Setter Property="FontSize" Value="13" />
+    <Setter Property="Cursor" Value="Hand" />
+    <Setter Property="Template">
+      <Setter.Value>
+        <ControlTemplate TargetType="CheckBox">
+          <Grid Background="Transparent">
+            <Grid.ColumnDefinitions>
+              <ColumnDefinition Width="Auto" />
+              <ColumnDefinition Width="*" />
+            </Grid.ColumnDefinitions>
+            <Border x:Name="box" Width="18" Height="18" CornerRadius="4" BorderThickness="1.5"
+                    BorderBrush="{StaticResource Border}" Background="{StaticResource Surface}"
+                    VerticalAlignment="Center">
+              <Path x:Name="chk" Data="M0,4 L3.5,7.5 L9,1" Stroke="White" StrokeThickness="2"
+                    StrokeEndLineCap="Round" StrokeStartLineCap="Round"
+                    HorizontalAlignment="Center" VerticalAlignment="Center" Visibility="Collapsed" />
+            </Border>
+            <ContentPresenter Grid.Column="1" Margin="9,0,0,0" VerticalAlignment="Center"
+                              TextElement.Foreground="{TemplateBinding Foreground}" />
+          </Grid>
+          <ControlTemplate.Triggers>
+            <Trigger Property="IsChecked" Value="True">
+              <Setter TargetName="box" Property="Background" Value="{StaticResource Accent}" />
+              <Setter TargetName="box" Property="BorderBrush" Value="{StaticResource Accent}" />
+              <Setter TargetName="chk" Property="Visibility" Value="Visible" />
+            </Trigger>
+            <Trigger Property="IsMouseOver" Value="True">
+              <Setter TargetName="box" Property="BorderBrush" Value="{StaticResource Accent}" />
+            </Trigger>
+          </ControlTemplate.Triggers>
+        </ControlTemplate>
+      </Setter.Value>
+    </Setter>
+  </Style>
+
+  <!-- ===== RadioButton (다크) ===== -->
+  <Style TargetType="RadioButton">
+    <Setter Property="Foreground" Value="{StaticResource Text}" />
+    <Setter Property="FontSize" Value="13" />
+    <Setter Property="Margin" Value="0,5" />
+    <Setter Property="Cursor" Value="Hand" />
+    <Setter Property="Template">
+      <Setter.Value>
+        <ControlTemplate TargetType="RadioButton">
+          <Grid Background="Transparent">
+            <Grid.ColumnDefinitions>
+              <ColumnDefinition Width="Auto" />
+              <ColumnDefinition Width="*" />
+            </Grid.ColumnDefinitions>
+            <Border x:Name="box" Width="18" Height="18" CornerRadius="9" BorderThickness="1.5"
+                    BorderBrush="{StaticResource Border}" Background="{StaticResource Surface}"
+                    VerticalAlignment="Top">
+              <Ellipse x:Name="dot" Width="8" Height="8" Fill="White" Visibility="Collapsed" />
+            </Border>
+            <ContentPresenter Grid.Column="1" Margin="9,0,0,0" VerticalAlignment="Center"
+                              TextElement.Foreground="{TemplateBinding Foreground}" />
+          </Grid>
+          <ControlTemplate.Triggers>
+            <Trigger Property="IsChecked" Value="True">
+              <Setter TargetName="box" Property="Background" Value="{StaticResource Accent}" />
+              <Setter TargetName="box" Property="BorderBrush" Value="{StaticResource Accent}" />
+              <Setter TargetName="dot" Property="Visibility" Value="Visible" />
+            </Trigger>
+            <Trigger Property="IsMouseOver" Value="True">
+              <Setter TargetName="box" Property="BorderBrush" Value="{StaticResource Accent}" />
+            </Trigger>
+          </ControlTemplate.Triggers>
+        </ControlTemplate>
+      </Setter.Value>
+    </Setter>
+  </Style>
+
+  <!-- ===== ProgressBar (다크) ===== -->
+  <Style TargetType="ProgressBar">
+    <Setter Property="Background" Value="{StaticResource Bg}" />
+    <Setter Property="Foreground" Value="{StaticResource Accent}" />
+    <Setter Property="Template">
+      <Setter.Value>
+        <ControlTemplate TargetType="ProgressBar">
+          <Border Background="{TemplateBinding Background}" CornerRadius="5" ClipToBounds="True">
+            <Grid>
+              <Border x:Name="PART_Track" />
+              <Border x:Name="PART_Indicator" Background="{TemplateBinding Foreground}"
+                      HorizontalAlignment="Left" CornerRadius="5" />
+            </Grid>
+          </Border>
+        </ControlTemplate>
+      </Setter.Value>
+    </Setter>
+  </Style>
+
+  <Style TargetType="Label">
+    <Setter Property="Foreground" Value="{StaticResource TextSubtle}" />
+    <Setter Property="FontSize" Value="12" />
+    <Setter Property="Padding" Value="0,0,0,2" />
+  </Style>
+
+  <!-- ToolTip 다크 -->
+  <Style TargetType="ToolTip">
+    <Setter Property="Background" Value="{StaticResource PopupBg}" />
+    <Setter Property="Foreground" Value="{StaticResource Text}" />
+    <Setter Property="BorderBrush" Value="{StaticResource Border}" />
+  </Style>
+
+</ResourceDictionary>
diff --git a/DB720Flasher/app.manifest b/DB720Flasher/app.manifest
new file mode 100644
index 0000000..54f1faa
--- /dev/null
+++ b/DB720Flasher/app.manifest
@@ -0,0 +1,19 @@
+<?xml version="1.0" encoding="utf-8"?>
+<assembly manifestVersion="1.0" xmlns="urn:schemas-microsoft-com:asm.v1">
+  <assemblyIdentity version="1.0.0.0" name="DB720Flasher.app" />
+
+  <!-- DPI 인식: 고해상도에서 또렷하게 -->
+  <application xmlns="urn:schemas-microsoft-com:asm.v3">
+    <windowsSettings>
+      <dpiAwareness xmlns="http://schemas.microsoft.com/SMI/2016/WindowsSettings">PerMonitorV2</dpiAwareness>
+      <dpiAware xmlns="http://schemas.microsoft.com/SMI/2005/WindowsSettings">true</dpiAware>
+    </windowsSettings>
+  </application>
+
+  <!-- Windows 10/11 호환 선언 -->
+  <compatibility xmlns="urn:schemas-microsoft-com:compatibility.v1">
+    <application>
+      <supportedOS Id="{8e0f7a12-bfb3-4fe8-b9a5-48fd50a15a9a}" />
+    </application>
+  </compatibility>
+</assembly>
diff --git a/DB720Flasher/tools/esptool/LICENSE b/DB720Flasher/tools/esptool/LICENSE
new file mode 100644
index 0000000..d159169
--- /dev/null
+++ b/DB720Flasher/tools/esptool/LICENSE
@@ -0,0 +1,339 @@
+                    GNU GENERAL PUBLIC LICENSE
+                       Version 2, June 1991
+
+ Copyright (C) 1989, 1991 Free Software Foundation, Inc.,
+ 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ Everyone is permitted to copy and distribute verbatim copies
+ of this license document, but changing it is not allowed.
+
+                            Preamble
+
+  The licenses for most software are designed to take away your
+freedom to share and change it.  By contrast, the GNU General Public
+License is intended to guarantee your freedom to share and change free
+software--to make sure the software is free for all its users.  This
+General Public License applies to most of the Free Software
+Foundation's software and to any other program whose authors commit to
+using it.  (Some other Free Software Foundation software is covered by
+the GNU Lesser General Public License instead.)  You can apply it to
+your programs, too.
+
+  When we speak of free software, we are referring to freedom, not
+price.  Our General Public Licenses are designed to make sure that you
+have the freedom to distribute copies of free software (and charge for
+this service if you wish), that you receive source code or can get it
+if you want it, that you can change the software or use pieces of it
+in new free programs; and that you know you can do these things.
+
+  To protect your rights, we need to make restrictions that forbid
+anyone to deny you these rights or to ask you to surrender the rights.
+These restrictions translate to certain responsibilities for you if you
+distribute copies of the software, or if you modify it.
+
+  For example, if you distribute copies of such a program, whether
+gratis or for a fee, you must give the recipients all the rights that
+you have.  You must make sure that they, too, receive or can get the
+source code.  And you must show them these terms so they know their
+rights.
+
+  We protect your rights with two steps: (1) copyright the software, and
+(2) offer you this license which gives you legal permission to copy,
+distribute and/or modify the software.
+
+  Also, for each author's protection and ours, we want to make certain
+that everyone understands that there is no warranty for this free
+software.  If the software is modified by someone else and passed on, we
+want its recipients to know that what they have is not the original, so
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+
+  Finally, any free program is threatened constantly by software
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+patent must be licensed for everyone's free use or not licensed at all.
+
+  The precise terms and conditions for copying, distribution and
+modification follow.
+
+                    GNU GENERAL PUBLIC LICENSE
+   TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
+
+  0. This License applies to any program or other work which contains
+a notice placed by the copyright holder saying it may be distributed
+under the terms of this General Public License.  The "Program", below,
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+language.  (Hereinafter, translation is included without limitation in
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+Activities other than copying, distribution and modification are not
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+running the Program is not restricted, and the output from the Program
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+  1. You may copy and distribute verbatim copies of the Program's
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+along with the Program.
+
+You may charge a fee for the physical act of transferring a copy, and
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+  2. You may modify your copy or copies of the Program or any portion
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+    c) If the modified program normally reads commands interactively
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+These requirements apply to the modified work as a whole.  If
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+Thus, it is not the intent of this section to claim rights or contest
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+  3. You may copy and distribute the Program (or a work based on it,
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+  4. You may not copy, modify, sublicense, or distribute the Program
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+
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+later version", you have the option of following the terms and conditions
+either of that version or of any later version published by the Free
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+
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+                            NO WARRANTY
+
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+                     END OF TERMS AND CONDITIONS
+
+            How to Apply These Terms to Your New Programs
+
+  If you develop a new program, and you want it to be of the greatest
+possible use to the public, the best way to achieve this is to make it
+free software which everyone can redistribute and change under these terms.
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+  To do so, attach the following notices to the program.  It is safest
+to attach them to the start of each source file to most effectively
+convey the exclusion of warranty; and each file should have at least
+the "copyright" line and a pointer to where the full notice is found.
+
+    <one line to give the program's name and a brief idea of what it does.>
+    Copyright (C) <year>  <name of author>
+
+    This program is free software; you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation; either version 2 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License along
+    with this program; if not, write to the Free Software Foundation, Inc.,
+    51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+
+Also add information on how to contact you by electronic and paper mail.
+
+If the program is interactive, make it output a short notice like this
+when it starts in an interactive mode:
+
+    Gnomovision version 69, Copyright (C) year name of author
+    Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
+    This is free software, and you are welcome to redistribute it
+    under certain conditions; type `show c' for details.
+
+The hypothetical commands `show w' and `show c' should show the appropriate
+parts of the General Public License.  Of course, the commands you use may
+be called something other than `show w' and `show c'; they could even be
+mouse-clicks or menu items--whatever suits your program.
+
+You should also get your employer (if you work as a programmer) or your
+school, if any, to sign a "copyright disclaimer" for the program, if
+necessary.  Here is a sample; alter the names:
+
+  Yoyodyne, Inc., hereby disclaims all copyright interest in the program
+  `Gnomovision' (which makes passes at compilers) written by James Hacker.
+
+  <signature of Ty Coon>, 1 April 1989
+  Ty Coon, President of Vice
+
+This General Public License does not permit incorporating your program into
+proprietary programs.  If your program is a subroutine library, you may
+consider it more useful to permit linking proprietary applications with the
+library.  If this is what you want to do, use the GNU Lesser General
+Public License instead of this License.
diff --git a/DB720Flasher/tools/esptool/esptool.exe b/DB720Flasher/tools/esptool/esptool.exe
new file mode 100644
index 0000000..d28525c
Binary files /dev/null and b/DB720Flasher/tools/esptool/esptool.exe differ
diff --git a/README.md b/README.md
new file mode 100644
index 0000000..43fd008
--- /dev/null
+++ b/README.md
@@ -0,0 +1,225 @@
+# DB720 펌웨어 적재 키트 (PowerShell)
+
+ESP32-P4 기반 DB720 보드에 **secure_release 서명 펌웨어**를 PowerShell로 적재하는 독립 키트입니다.
+이 폴더 하나만 있으면 빌드 환경 없이도 적재할 수 있습니다(esptool만 있으면 됨).
+
+- 펌웨어: `DIBD720Ue_08B_08R040C` (8단40열 = 640×128, 256색/08B) — db250513 키로 V2 서명한 secure_release 빌드
+- 빌드일: 2026-06-22 (버전 3.7.2)
+
+> **DB720은 secure_release 단일입니다.** 적재·빌드·OTA에 쓰는 펌웨어는 **db250513 키로 서명한 바이너리뿐**입니다.
+> 서명이 없는 일반 빌드(예: V3.7.1 같은 공개 릴리즈 바이너리)는 secure_release 부트로더가 **서명 검증에서 거부**해 부팅되지 않습니다.
+> 이 키트의 `firmware\` 폴더에는 **db250513 서명본만** 두세요(비서명 bin 금지).
+
+---
+
+## 0. 두 경우 — 어느 스크립트를 쓰나
+
+| 보드 상태 | 스크립트 | 무엇을 쓰나 | 위험 |
+|---|---|---|---|
+| **일상적 앱 교체** (서명 부트로더가 이미 정상) | `flash_app.ps1` | 부트로더 **제외** 4종(파티션/ota_data/앱/www) | 없음 — 부트로더 안 건드려 **brick 불가** |
+| **부트로더가 비었을 때** (flash 통째 지워짐 / 0x2000 빔 / 부팅 안 됨) | `flash_full.ps1` | 부트로더+파티션+ota_data+앱+www **5종 전부** | ⚠ 부트로더(0x2000)에 손댐 — 아래 §1 경고 |
+
+> **일상 적재는 `flash_app.ps1`(경우 B)만 쓰세요.** 가능하면 `-AppOnly`로 앱만 올립니다.
+> `flash_full.ps1`(경우 A)은 **부트로더가 실제로 비어 부팅이 안 될 때만** 쓰는 복구 전용입니다.
+
+---
+
+## 1. ★★★ full flash 경고 (경우 A 전용) ★★★
+
+`flash_full.ps1`은 부트로더(0x2000)까지 다시 씁니다.
+
+- **이미 secure_release로 구워진 보드** (예: 회사 `.230`) → 부트로더가 이미 영구 고정돼 있으므로 같은 서명 부트로더를 다시 쓸 이유가 없습니다. **일상 적재에 경우 A를 쓰지 마세요** — `flash_app.ps1`이면 충분합니다.
+- **eFuse가 아직 안 구워진 보드** → secure_release 서명본을 full flash하면 첫 부팅에 secure boot **eFuse가 영구로 구워집니다**(되돌릴 수 없음).
+  - **eFuse는 비가역입니다.** 한 번 구워지면 그 보드는 영원히 이 서명 체계에만 묶입니다(DB400 V1에서 `ABS_DONE_0` 잠김으로 보드가 brick된 실증이 있습니다).
+  - **db250513 키를 분실하면 그 보드는 OTA로 더 이상 펌웨어를 못 올립니다(영구).** 키 백업은 필수입니다.
+
+`flash_app.ps1`(경우 B)은 부트로더를 안 건드리므로 이 위험이 **없습니다**.
+
+---
+
+## 2. 사전 준비
+
+1. **USB-JTAG 케이블**로 PC ↔ DB720 연결 (보드의 USB-JTAG 포트).
+2. **esptool**이 있는 파이썬. 두 스크립트는 기본으로 ESP-IDF 파이썬을 씁니다:
+   `C:\Users\jyheo\.espressif\python_env\idf5.5_py3.13_env\Scripts\python.exe`
+   - 환경이 다르면 `flash_full.ps1` / `flash_app.ps1` 상단의 `$Python` 한 줄만 고치세요.
+   - 또는 `pip install esptool` 한 파이썬이 PATH에 있으면 자동 폴백됩니다.
+   - esptool은 **v4.11 이상**이어야 합니다(낮으면 적재 중 멈춤).
+3. **COM 포트 확인** — 적재 포트(USB-JTAG)는 번호가 바뀔 수 있습니다:
+   ```powershell
+   .\list_ports.ps1
+   ```
+   - `USB 직렬 장치(COMx)` 또는 VID `303A:1001` = **적재 포트** (`-Port COMx`)
+   - `Silicon Labs CP210x (COMx)` = **COM2 자리**(디버그·문구 전송, 적재 중 열지 말 것)
+
+---
+
+## 3. 적재 방법
+
+PowerShell을 이 폴더에서 열고:
+
+### 경우 B — 서명 부트로더 있음 (일상 적재, 권장)
+```powershell
+# 앱만 최소로(앱 0x20000 + otadata erase) — 권장
+.\flash_app.ps1 -Port COM4 -AppOnly
+
+# 표준(파티션+ota_data+앱+www, 부트로더 제외)
+.\flash_app.ps1 -Port COM4
+```
+
+### 경우 A — 부트로더 비었음 (전체 복구 전용, §1 경고 확인)
+```powershell
+.\flash_full.ps1 -Port COM4
+```
+
+> 실행 정책 때문에 막히면(이 PC에 처음): `Set-ExecutionPolicy -Scope CurrentUser RemoteSigned` 한 번.
+> `-Port`를 생략하면 기본 `COM4`로 시도합니다.
+
+---
+
+## 3a. 앱이 여러 개일 때 — 골라서 올리기
+
+`firmware\` 폴더에 앱 `.bin`이 여러 개 있을 수 있습니다. 예를 들어 지금은 두 개가 들어 있습니다.
+
+| 앱 파일 | 화면 크기 | 상태 |
+|---|---|---|
+| `DIBD720Te_08C_04R020C.bin` | 320×64 (4단20열, 8색) | 부팅 검증됨 — 안전, 일상·복구용 권장 |
+| `DIBD720Ue_08B_08R040C.bin` | 640×128 (8단40열, 256색) | 부팅 미검증 — 테스트용(SRAM 한도 의심) |
+
+> 부트로더·파티션·ota_data·www_fs는 앱이 아니라 보조 파일이라 선택 대상에서 빠집니다. 앱 후보는 그 4개를 뺀 나머지 `.bin`입니다.
+
+### 1단계 — 어떤 앱이 있는지 본다
+
+앱을 지정하지 않고 그냥 실행하면, 스크립트가 **임의로 고르지 않고** 앱 목록을 보여준 뒤 멈춥니다.
+
+```powershell
+.\flash_app.ps1 -Port COM4
+```
+출력 예:
+```
+여러 앱이 있습니다 — -App 으로 하나를 지정하세요:
+   DIBD720Te_08C_04R020C.bin
+   DIBD720Ue_08B_08R040C.bin
+예: .\flash_app.ps1 -Port COM4 -App DIBD720Te_08C_04R020C.bin
+```
+
+### 2단계 — 올릴 앱을 `-App`으로 지정한다
+
+```powershell
+# 320×64(검증된 것)을 앱만 최소로 올리기 — 권장
+.\flash_app.ps1 -Port COM4 -App DIBD720Te_08C_04R020C.bin -AppOnly
+
+# 640×128(테스트)을 표준으로 올리기
+.\flash_app.ps1 -Port COM4 -App DIBD720Ue_08B_08R040C.bin
+```
+
+- `-App` 값은 `firmware\` 안의 **파일명만** 적습니다(경로 없이).
+- 앱이 **하나뿐이면** `-App`을 생략해도 그것이 자동 선택됩니다(여러 개일 때만 지정 필수).
+- `flash_full.ps1`(경우 A)도 똑같이 `-App`으로 고릅니다.
+
+---
+
+## 3b. 전체 굽기 (full flash) — 5영역 전부
+
+부트로더(0x2000)까지 포함해 **5개 영역을 전부** 쓰는 절차입니다. flash가 통째로 비었거나 부트로더가 깨져 부팅이 안 될 때 보드를 처음부터 살립니다.
+
+> ⚠ **먼저 §1 경고를 읽으세요.** 전체 굽기는 부트로더를 건드리므로, eFuse가 안 구워진 보드에서는 **첫 부팅에 secure boot eFuse가 영구로 구워집니다**(되돌릴 수 없음). 일상 적재에는 쓰지 말고 §3(앱 적재)을 쓰세요. 전체 굽기는 **부트로더가 실제로 비어 부팅이 안 될 때만** 씁니다.
+
+### 무엇을 쓰나 (영역 5개)
+
+| offset | 파일 | 크기 | 서명 |
+|---|---|---|---|
+| `0x2000` | `firmware\bootloader.bin` | 45KB | db250513 서명 |
+| `0x10000` | `firmware\partition-table.bin` | 3KB | 비서명(정상) |
+| `0x11000` | `firmware\ota_data_initial.bin` | 8KB | 비서명(정상) |
+| `0x20000` | 선택한 앱 (`-App`) | 1.2~1.7MB | db250513 서명 |
+| `0x420000` | `firmware\www_fs.bin` | 512KB | 비서명(정상) |
+
+### 방법 1 — 스크립트 (권장)
+
+```powershell
+# 앱이 하나면 그대로
+.\flash_full.ps1 -Port COM4
+
+# 앱이 여러 개면 -App 으로 지정
+.\flash_full.ps1 -Port COM4 -App DIBD720Te_08C_04R020C.bin
+```
+
+스크립트가 5영역을 **하나씩 개별 호출**로 쓴 뒤(SDM 다중영역 한 번에 쓰면 중간 실패) hard_reset 합니다.
+
+### 방법 2 — 수동 esptool (스크립트가 안 될 때, 한 줄씩)
+
+`COM4`는 적재 포트로 바꾸고(`.\list_ports.ps1`), `--flash_size 16MB`는 **반드시** 붙입니다(이게 빠지면 SDM에서 4MB로 오인해 `0x420000`(www_fs)을 못 써 부팅 루프가 납니다 — 2026-06-22 실증).
+
+```powershell
+$P = "C:\Users\jyheo\.espressif\python_env\idf5.5_py3.13_env\Scripts\python.exe"
+$C = "--chip","esp32p4","-p","COM4","-b","115200","--before","default_reset","--after","no_reset","--connect-attempts","30","--no-stub"
+$W = "write_flash","--flash_mode","dio","--flash_size","16MB","--flash_freq","80m"
+& $P -m esptool @C @W 0x2000   firmware\bootloader.bin
+& $P -m esptool @C @W 0x10000  firmware\partition-table.bin
+& $P -m esptool @C @W 0x11000  firmware\ota_data_initial.bin
+& $P -m esptool @C @W 0x20000  firmware\DIBD720Te_08C_04R020C.bin   # 올릴 앱
+& $P -m esptool @C @W 0x420000 firmware\www_fs.bin
+# SDM 탈출(정상 부팅)
+& $P -c "from esptool.targets.esp32p4 import ESP32P4ROM; r=ESP32P4ROM('COM4'); r.connect('default_reset'); r.hard_reset()"
+```
+
+> ★ **secure 보드는 부트로더(0x2000)·전체 erase write를 거부할 수 있습니다** — `0105 format invalid` 같은 거부는 부트로더가 이미 같은 키로 구워져 있다는 뜻(정상)이라, 그 경우 0x2000은 건너뛰고 나머지 4영역만 쓰면 됩니다(= §3 앱 적재로 충분).
+> ★ esptool/USB 리셋은 이 보드에서 다운로드 모드로 떨어지는 경향이 있어, **최종 부팅은 USB-JTAG 케이블을 뽑고 전원 사이클**해야 확실합니다.
+
+---
+
+## 4. 적재 메커니즘 (왜 이렇게 하나)
+
+- **eco2 secure download mode(SDM) 레시피**: `--no-stub` + `115200` baud + `--before default_reset --after no_reset`.
+  secure 보드는 esptool stub를 못 올리므로 `--no-stub`, 다운로드 모드 안정 위해 115200을 씁니다.
+- **영역은 하나씩 개별 esptool 호출로** 씁니다. SDM에서 여러 영역을 한 번에 쓰면 중간에 "Failed to enter Flash download mode"로 실패합니다(2026-06-22 실증 — www_fs가 빈 채 남아 부팅 루프).
+- **부트로더(0x2000)는 경우 A에서만** 씁니다. secure 보드는 부트로더/전체 erase를 거부하는 게 정상입니다.
+- 적재 후 `--after no_reset`로 남은 다운로드 모드를 **hard_reset**(esptool ROM 객체)으로 빠져나와 정상 부팅합니다.
+- 오프셋 정본: 부트로더 `0x2000` / 파티션 `0x10000` / ota_data `0x11000` / 앱 `0x20000` / www_fs `0x420000`. flash: dio / keep / 80m.
+
+---
+
+## 5. 적재 후 확인
+
+다음 중 하나로 새 펌웨어가 실제로 올라가 부팅됐는지 확인합니다.
+
+- **COM2(디버그 콘솔, CP210x)에서 `![0081!]`** 을 115200bps로 보내 버전 배너가 오면 정상(적재 포트 COM4 아님).
+- **부트로그**에 `RSA-PSS verified`(secure_release 서명 검증 통과)와 정상 부팅 메시지가 보이면 정상.
+- **LAN으로 받은 빌드 시각**을 키트의 빌드일(이 README 상단)과 대조 — 날짜가 맞으면 새 펌웨어가 적용된 것입니다.
+
+> 적재 포트(COM4/USB-JTAG)는 **측정·표출 중 열지 마세요** — DTR/RTS가 보드를 리셋해 화면이 날아갑니다.
+
+---
+
+## 6. 안 될 때
+
+| 증상 | 조치 |
+|---|---|
+| 포트 연결 실패 / `could not open port` | `.\list_ports.ps1`로 실제 USB-JTAG COM 번호 확인 후 `-Port COMx`. 다른 프로그램이 그 포트를 잡고 있으면 닫기 |
+| `~0.72MB`에서 멈춤(hang) | esptool 버전이 낮음(<4.11). `pip install -U esptool` (이 키트는 v4.11+ 전제) |
+| 적재는 됐는데 부팅 안 됨(검정/무응답) | 먼저 `flash_app.ps1 -AppOnly`로 otadata를 지워 ota_0으로 폴백 시도. 그래도 안 되고 부트로더가 빈 것 같으면 경우 A `flash_full.ps1` |
+| 부트로그에 서명 검증 실패 | 비서명(서명 없는) bin을 올렸을 때 발생. `firmware\`에 **db250513 서명본만** 있는지 확인(V3.7.1 같은 일반 릴리즈 bin은 secure_release에서 부팅 거부) |
+| `secure download` / 권한 오류 반복 | USB 케이블 재연결 후 재시도(스크립트가 connect 30회 재시도) |
+
+---
+
+## 7. 포함 파일
+
+```
+DB720_Flash\
+├─ README.md                  ← 이 문서
+├─ list_ports.ps1             ← COM 포트 확인
+├─ flash_app.ps1              ← 경우 B: 서명 부트로더 있을 때(brick-safe, 권장)
+├─ flash_full.ps1             ← 경우 A: 부트로더 비었을 때(full, §1 경고)
+└─ firmware\
+   ├─ bootloader.bin            (0x2000,  45KB)  ← 경우 A에서만 사용 (db250513 서명)
+   ├─ partition-table.bin       (0x10000,  3KB)  ← 비서명(설계상 정상)
+   ├─ ota_data_initial.bin      (0x11000,  8KB)  ← 비서명(설계상 정상)
+   ├─ DIBD720Te_08C_04R020C.bin (0x20000, 1.2MB) ← 앱① 320×64, 8색 (db250513 서명, 부팅 검증됨·권장)
+   ├─ DIBD720Ue_08B_08R040C.bin (0x20000, 1.7MB) ← 앱② 640×128, 256색 (db250513 서명, 테스트용·미검증)
+   └─ www_fs.bin                (0x420000, 512KB) ← 비서명(설계상 정상)
+```
+
+> 앱이 둘 다 `0x20000`(ota_0)에 올라가는 같은 자리라, **한 번에 하나만** 적재됩니다. 어느 것을 올릴지는 §3a의 `-App`으로 고릅니다.
+> 서명 대상(앱·부트로더)은 모두 db250513 서명본이고, 파티션·ota_data·www_fs는 secure boot v2가 서명하지 않는 정상 파일입니다.
diff --git a/firmware/flash.json b/firmware/flash.json
new file mode 100644
index 0000000..41c50c2
--- /dev/null
+++ b/firmware/flash.json
@@ -0,0 +1,27 @@
+{
+  "name": "DB720 (ESP32-P4)",
+  "chip": "esp32p4",
+  "baud": 115200,
+  "noStub": true,
+  "perRegion": true,
+  "connectAttempts": 30,
+  "flashSize": "16MB",
+  "flashMode": "dio",
+  "flashFreq": "80m",
+  "before": "default-reset",
+  "after": "hard-reset",
+  "appOnlyErasesOtadata": true,
+  "otadataOffset": "0x11000",
+  "otadataSize": "0x2000",
+  "regions": [
+    { "file": "bootloader.bin",       "offset": "0x2000",   "kind": "bootloader" },
+    { "file": "partition-table.bin",  "offset": "0x10000",  "kind": "support" },
+    { "file": "ota_data_initial.bin", "offset": "0x11000",  "kind": "support" },
+    { "file": "www_fs.bin",           "offset": "0x420000", "kind": "support" },
+    { "app": true,                    "offset": "0x20000" }
+  ],
+  "flashPortHint": "303A:1001",
+  "consolePortHint": "10C4:EA60",
+  "downloadModeHint": "USB-JTAG 케이블 연결. 포트가 안 잡히면 케이블만 다시 꽂으면 됩니다(자동 감지).",
+  "notes": "secure_release · db250513 서명. 영역별 개별 호출(SDM). 부트로더(0x2000)는 이미 구워진 보드면 거부될 수 있음(정상 → 표준/앱만)."
+}
diff --git a/flash_app.ps1 b/flash_app.ps1
new file mode 100644
index 0000000..b86e35d
--- /dev/null
+++ b/flash_app.ps1
@@ -0,0 +1,83 @@
+# =====================================================================
+#  DB720 (ESP32-P4) 앱 적재 — 경우 B: 서명된 부트로더가 이미 있을 때 (brick-safe)
+# =====================================================================
+#  언제 쓰나
+#    - 부트로더(0x2000)는 정상이고 펌웨어(앱)만 새로 올릴 때. 일상적 적재는 이쪽.
+#    - 부트로더(0x2000)를 건드리지 않으므로 eFuse 재굽힘·brick 위험이 없다 (가장 안전).
+#
+#  무엇을 쓰나 (부트로더 0x2000 제외)
+#    - 기본: 파티션 0x10000 / ota_data 0x11000 / 앱 0x20000 / www_fs 0x420000
+#    - -AppOnly: 앱 0x20000 + otadata erase 만 (최소 적재)
+#
+#  ★ 앱이 여러 개일 때 — firmware\ 안의 앱 .bin 을 -App 으로 지정한다.
+#    지정 안 하면: 앱이 1개면 자동 선택 / 여러 개면 목록을 보여주고 멈춘다(임의 선택 안 함).
+#
+#  ★ 적재 방식 — 영역을 "하나씩" 개별 esptool 호출로 쓴다.
+#    eco2 보안 다운로드 모드(SDM)에서 여러 영역을 한 번에 쓰면 중간에
+#    "Failed to enter Flash download mode"로 실패한다(2026-06-22 실증 — www_fs가 빈 채 남아 부팅 루프).
+# =====================================================================
+
+param(
+    [string]$Port = "COM4",          # USB-JTAG 포트 (.\list_ports.ps1 로 확인)
+    [string]$App  = "",              # 앱 bin 파일명 (firmware\ 안). 비우면 자동 선택
+    [switch]$AppOnly                 # 켜면 앱(0x20000)만 + otadata erase
+)
+
+$ErrorActionPreference = "Stop"
+$here = Split-Path -Parent $MyInvocation.MyCommand.Path
+$fw   = Join-Path $here "firmware"
+
+$Python = "C:\Users\jyheo\.espressif\python_env\idf5.5_py3.13_env\Scripts\python.exe"
+if (-not (Test-Path $Python)) { $Python = "python" }
+
+# eco2 SDM 안정 레시피: --no-stub + 115200 + --after no_reset(이후 별도 hard_reset)
+$baud   = "115200"
+$common = @("--chip","esp32p4","-p",$Port,"-b",$baud,
+            "--before","default_reset","--after","no_reset","--connect-attempts","30","--no-stub")
+
+# ---- 앱 선택 (여러 개면 -App 으로 지정) ----------------------------------
+$support = @("bootloader.bin","partition-table.bin","ota_data_initial.bin","www_fs.bin")
+$apps = @(Get-ChildItem (Join-Path $fw "*.bin") -ErrorAction SilentlyContinue | Where-Object { $support -notcontains $_.Name })
+if ($App) {
+    $appPath = Join-Path $fw $App
+    if (-not (Test-Path $appPath)) { Write-Host "✗ 앱 없음: $appPath" -ForegroundColor Red; exit 1 }
+} elseif ($apps.Count -eq 1) {
+    $appPath = $apps[0].FullName
+} elseif ($apps.Count -eq 0) {
+    Write-Host "✗ firmware\ 에 앱 bin 이 없습니다." -ForegroundColor Red; exit 1
+} else {
+    Write-Host "여러 앱이 있습니다 — -App 으로 하나를 지정하세요:" -ForegroundColor Yellow
+    $apps | ForEach-Object { Write-Host "   $($_.Name)" }
+    Write-Host "예: .\flash_app.ps1 -Port $Port -App $($apps[0].Name)" -ForegroundColor Gray
+    exit 1
+}
+
+# ---- 영역별 개별 적재 함수 (SDM 다중영역 실패 회피) ----------------------
+function Flash-Region([string]$off, [string]$file) {
+    Write-Host "[flash] $off  $(Split-Path -Leaf $file)" -ForegroundColor Cyan
+    & $Python -m esptool @common write_flash --flash_mode dio --flash_size 16MB --flash_freq 80m $off $file
+    if ($LASTEXITCODE -ne 0) { Write-Host "✗ $off write 실패 (rc=$LASTEXITCODE)" -ForegroundColor Red; exit 1 }
+}
+
+Write-Host "============================================================" -ForegroundColor Yellow
+Write-Host " DB720 APP FLASH (경우 B — 서명 부트로더 있음, brick-safe)" -ForegroundColor Yellow
+Write-Host " Port=$Port  App=$(Split-Path -Leaf $appPath)  AppOnly=$AppOnly" -ForegroundColor Yellow
+Write-Host " 부트로더(0x2000) 안 건드림 = eFuse 재굽힘/brick 없음" -ForegroundColor Green
+Write-Host "============================================================" -ForegroundColor Yellow
+
+if ($AppOnly) {
+    Flash-Region "0x20000" $appPath
+    Write-Host "[otadata] erase 0x11000 0x2000 (ota_0 부팅)" -ForegroundColor Cyan
+    & $Python -m esptool @common erase_region "0x11000" "0x2000"
+    if ($LASTEXITCODE -ne 0) { Write-Host "✗ otadata erase 실패 (rc=$LASTEXITCODE)" -ForegroundColor Red; exit 1 }
+} else {
+    Flash-Region "0x10000"  (Join-Path $fw "partition-table.bin")
+    Flash-Region "0x11000"  (Join-Path $fw "ota_data_initial.bin")
+    Flash-Region "0x20000"  $appPath
+    Flash-Region "0x420000" (Join-Path $fw "www_fs.bin")
+}
+
+Write-Host "[reset] hard_reset (SDM 탈출)" -ForegroundColor Cyan
+& $Python -c "from esptool.targets.esp32p4 import ESP32P4ROM; r=ESP32P4ROM('$Port'); r.connect('default_reset'); r.hard_reset(); print('hard_reset OK')"
+
+Write-Host "✓ APP FLASH 완료 — 부팅 확인은 COM2(디버그 콘솔)에서 ![0081!] 응답/배너로." -ForegroundColor Green
diff --git a/flash_full.ps1 b/flash_full.ps1
new file mode 100644
index 0000000..8578d7e
--- /dev/null
+++ b/flash_full.ps1
@@ -0,0 +1,76 @@
+# =====================================================================
+#  DB720 (ESP32-P4) 전체 적재 — 경우 A: 부트로더가 비었을 때 (full flash)
+# =====================================================================
+#  언제 쓰나
+#    - flash가 통째로 지워졌거나(erase_flash 후) 부트로더(0x2000)가 비어 부팅이 안 될 때.
+#    - 서명 부트로더까지 다시 써서 보드를 처음부터 살린다(서명 5종 전부).
+#
+#  ★★★ eFuse 경고 (비가역) ★★★
+#    이 빌드는 secure_RELEASE(실 eFuse 전제) 서명본이다.
+#    - 이미 secure boot eFuse가 구워진 보드(.230 등) → 같은 서명 부트로더를 다시 쓰는 것이라 안전(복구).
+#    - eFuse가 아직 안 구워진 보드 → 이걸 full flash하면 첫 부팅에 eFuse가 "영구로" 구워진다(비가역 brick 위험).
+#    => eFuse 미굽힘 보드의 최초 프로비저닝은 secure_DEV(가상 eFuse) 빌드로 해야 한다. 여기선 쓰지 말 것.
+#
+#  ★ 앱이 여러 개일 때 — firmware\ 안의 앱 .bin 을 -App 으로 지정한다(미지정+여러개면 목록 후 멈춤).
+#  ★ 적재 방식 — 영역을 "하나씩" 개별 esptool 호출로 쓴다(SDM 다중영역 한 번에 쓰면 중간 실패, 2026-06-22 실증).
+#
+#  연결: USB-JTAG(보드의 COM4 자리). COM 번호 바뀌면 .\list_ports.ps1 로 확인.
+# =====================================================================
+
+param(
+    [string]$Port = "COM4",
+    [string]$App  = ""               # 앱 bin 파일명 (firmware\ 안). 비우면 자동 선택
+)
+
+$ErrorActionPreference = "Stop"
+$here = Split-Path -Parent $MyInvocation.MyCommand.Path
+$fw   = Join-Path $here "firmware"
+
+$Python = "C:\Users\jyheo\.espressif\python_env\idf5.5_py3.13_env\Scripts\python.exe"
+if (-not (Test-Path $Python)) { $Python = "python" }
+
+$baud   = "115200"
+$common = @("--chip","esp32p4","-p",$Port,"-b",$baud,
+            "--before","default_reset","--after","no_reset","--connect-attempts","30","--no-stub")
+
+# ---- 앱 선택 ------------------------------------------------------------
+$support = @("bootloader.bin","partition-table.bin","ota_data_initial.bin","www_fs.bin")
+$apps = @(Get-ChildItem (Join-Path $fw "*.bin") -ErrorAction SilentlyContinue | Where-Object { $support -notcontains $_.Name })
+if ($App) {
+    $appPath = Join-Path $fw $App
+    if (-not (Test-Path $appPath)) { Write-Host "✗ 앱 없음: $appPath" -ForegroundColor Red; exit 1 }
+} elseif ($apps.Count -eq 1) {
+    $appPath = $apps[0].FullName
+} elseif ($apps.Count -eq 0) {
+    Write-Host "✗ firmware\ 에 앱 bin 이 없습니다." -ForegroundColor Red; exit 1
+} else {
+    Write-Host "여러 앱이 있습니다 — -App 으로 하나를 지정하세요:" -ForegroundColor Yellow
+    $apps | ForEach-Object { Write-Host "   $($_.Name)" }
+    Write-Host "예: .\flash_full.ps1 -Port $Port -App $($apps[0].Name)" -ForegroundColor Gray
+    exit 1
+}
+
+# ---- 영역별 개별 적재 함수 ----------------------------------------------
+function Flash-Region([string]$off, [string]$file) {
+    Write-Host "[flash] $off  $(Split-Path -Leaf $file)" -ForegroundColor Cyan
+    & $Python -m esptool @common write_flash --flash_mode dio --flash_size 16MB --flash_freq 80m $off $file
+    if ($LASTEXITCODE -ne 0) { Write-Host "✗ $off write 실패 (rc=$LASTEXITCODE)" -ForegroundColor Red; exit 1 }
+}
+
+Write-Host "============================================================" -ForegroundColor Yellow
+Write-Host " DB720 FULL FLASH (경우 A — 부트로더 비었을 때)" -ForegroundColor Yellow
+Write-Host " Port=$Port  App=$(Split-Path -Leaf $appPath)  Python=$Python" -ForegroundColor Yellow
+Write-Host " ★ eFuse 미굽힘 보드면 첫 부팅에 영구 굽힘 — 위 경고 확인" -ForegroundColor Red
+Write-Host "============================================================" -ForegroundColor Yellow
+
+# 서명 5종 — 각 영역 개별 호출 (부트로더 0x2000 포함)
+Flash-Region "0x2000"   (Join-Path $fw "bootloader.bin")
+Flash-Region "0x10000"  (Join-Path $fw "partition-table.bin")
+Flash-Region "0x11000"  (Join-Path $fw "ota_data_initial.bin")
+Flash-Region "0x20000"  $appPath
+Flash-Region "0x420000" (Join-Path $fw "www_fs.bin")
+
+Write-Host "[reset] hard_reset (SDM 탈출)" -ForegroundColor Cyan
+& $Python -c "from esptool.targets.esp32p4 import ESP32P4ROM; r=ESP32P4ROM('$Port'); r.connect('default_reset'); r.hard_reset(); print('hard_reset OK')"
+
+Write-Host "✓ FULL FLASH 완료 — 부팅 확인은 COM2(디버그 콘솔)에서 ![0081!] 응답/배너로." -ForegroundColor Green
diff --git a/list_ports.ps1 b/list_ports.ps1
new file mode 100644
index 0000000..7259340
--- /dev/null
+++ b/list_ports.ps1
@@ -0,0 +1,10 @@
+# DB720 COM 포트 확인 — USB-JTAG(303A:1001) = 적재 포트, CP210x(10C4:EA60) = COM2 디버그
+# 적재 포트는 COM 번호가 매번 바뀔 수 있으니 적재 전 이걸로 확인한다.
+Get-CimInstance Win32_PnPEntity |
+    Where-Object { $_.Name -match 'COM\d' } |
+    Select-Object Name, @{N='DeviceID';E={$_.DeviceID}} |
+    Format-Table -AutoSize -Wrap
+
+Write-Host ""
+Write-Host "→ USB-JTAG (VID_303A&PID_1001) 또는 'USB 직렬 장치(COMx)' = 적재 포트(-Port COMx)" -ForegroundColor Cyan
+Write-Host "→ Silicon Labs CP210x (COMx) = COM2 자리(디버그·문구 전송, 적재 중 열지 말 것)" -ForegroundColor Cyan
diff --git a/profiles/DB400S.flash.json b/profiles/DB400S.flash.json
new file mode 100644
index 0000000..029b794
--- /dev/null
+++ b/profiles/DB400S.flash.json
@@ -0,0 +1,20 @@
+{
+  "_comment": "DB400S(또는 DB400Q) 펌웨어 폴더에 'flash.json'으로 복사해서 쓰세요. DB400Q면 name만 바꾸면 됩니다.",
+  "name": "DB400S (ESP32)",
+  "chip": "esp32",
+  "baud": 921600,
+  "noStub": false,
+  "perRegion": false,
+  "before": "default-reset",
+  "after": "hard-reset",
+  "appOnlyErasesOtadata": false,
+  "regions": [
+    { "file": "bootloader.bin",       "offset": "0x1000",  "kind": "bootloader" },
+    { "file": "partition-table.bin",  "offset": "0x10000", "kind": "support" },
+    { "file": "ota_data_initial.bin", "offset": "0x11000", "kind": "support" },
+    { "app": true,                    "offset": "0x20000" }
+  ],
+  "consolePortHint": "10C4:EA60",
+  "downloadModeHint": "TTL(COM2) 연결. SW1 누른 상태에서 SW2 눌렀다 떼고 SW1 떼면 다운로드 모드 진입.",
+  "notes": "esp32 클래식. 부트로더 0x1000. 스텁 921600 · 한 번에. secure 보드는 부트로더(0x8000 아래) 거부 → --force 또는 앱만."
+}
diff --git a/profiles/DB402S.flash.json b/profiles/DB402S.flash.json
new file mode 100644
index 0000000..1d02886
--- /dev/null
+++ b/profiles/DB402S.flash.json
@@ -0,0 +1,20 @@
+{
+  "_comment": "DB402S 펌웨어 폴더에 'flash.json'으로 복사해서 쓰세요(이 _comment 줄은 지워도 됨). 그러면 앱이 폴더만 보고 이 설정대로 플래시합니다.",
+  "name": "DB402S (ESP32-S3)",
+  "chip": "esp32s3",
+  "baud": 921600,
+  "noStub": false,
+  "perRegion": false,
+  "before": "default-reset",
+  "after": "hard-reset",
+  "appOnlyErasesOtadata": false,
+  "regions": [
+    { "file": "bootloader.bin",       "offset": "0x0000",  "kind": "bootloader" },
+    { "file": "partition-table.bin",  "offset": "0x10000", "kind": "support" },
+    { "file": "ota_data_initial.bin", "offset": "0x11000", "kind": "support" },
+    { "app": true,                    "offset": "0x20000" }
+  ],
+  "consolePortHint": "10C4:EA60",
+  "downloadModeHint": "TTL(COM2) 연결. SW1 누른 상태에서 SW2 눌렀다 떼고 SW1 떼면 다운로드 모드 진입.",
+  "notes": "esp32-s3. 부트로더 offset 0x0000(중요). 스텁 921600 · 한 번에 기록. secure 보드는 부트로더(0x8000 아래) 거부 → --force 또는 앱만."
+}
diff --git a/profiles/DB720.flash.json b/profiles/DB720.flash.json
new file mode 100644
index 0000000..9a040fd
--- /dev/null
+++ b/profiles/DB720.flash.json
@@ -0,0 +1,28 @@
+{
+  "_comment": "DB720 펌웨어 폴더에 'flash.json'으로 복사해서 쓰세요. (이 키트의 firmware\\ 폴더엔 이미 들어 있습니다 — 여기 건 참고/백업용 템플릿입니다.)",
+  "name": "DB720 (ESP32-P4)",
+  "chip": "esp32p4",
+  "baud": 115200,
+  "noStub": true,
+  "perRegion": true,
+  "connectAttempts": 30,
+  "flashSize": "16MB",
+  "flashMode": "dio",
+  "flashFreq": "80m",
+  "before": "default-reset",
+  "after": "hard-reset",
+  "appOnlyErasesOtadata": true,
+  "otadataOffset": "0x11000",
+  "otadataSize": "0x2000",
+  "regions": [
+    { "file": "bootloader.bin",       "offset": "0x2000",   "kind": "bootloader" },
+    { "file": "partition-table.bin",  "offset": "0x10000",  "kind": "support" },
+    { "file": "ota_data_initial.bin", "offset": "0x11000",  "kind": "support" },
+    { "file": "www_fs.bin",           "offset": "0x420000", "kind": "support" },
+    { "app": true,                    "offset": "0x20000" }
+  ],
+  "flashPortHint": "303A:1001",
+  "consolePortHint": "10C4:EA60",
+  "downloadModeHint": "USB-JTAG 케이블 연결. 포트가 안 잡히면 케이블만 다시 꽂으면 됩니다(자동 감지).",
+  "notes": "secure_release · db250513 서명. 영역별 개별 호출(SDM). 부트로더(0x2000)는 이미 구워진 보드면 거부될 수 있음(정상 → 표준/앱만)."
+}