diff --git a/integration_test/windows_662_shot_test.dart b/integration_test/windows_662_shot_test.dart
new file mode 100644
index 0000000..5980132
--- /dev/null
+++ b/integration_test/windows_662_shot_test.dart
@@ -0,0 +1,105 @@
+import 'dart:io';
+import 'dart:ui' as ui;
+
+import 'package:flutter/material.dart';
+import 'package:flutter/rendering.dart';
+import 'package:flutter_test/flutter_test.dart';
+import 'package:integration_test/integration_test.dart';
+import 'package:jj_mkvmaker/app/app_controller.dart';
+import 'package:jj_mkvmaker/app/bookmarks_controller.dart';
+import 'package:jj_mkvmaker/platform/windows/desktop_storage_service.dart';
+import 'package:jj_mkvmaker/platform/windows/process_media_tool.dart';
+import 'package:jj_mkvmaker/services/platform_services.dart';
+import 'package:jj_mkvmaker/ui/app_actions.dart';
+import 'package:jj_mkvmaker/ui/browser_page.dart';
+import 'package:jj_mkvmaker/ui/home_page.dart';
+import 'package:jj_mkvmaker/ui/theme.dart';
+import 'package:path/path.dart' as p;
+
+/// 66-2 기기 감독 확인용 (Windows): 지금 화면 아이콘 (넓은 · 좁은 화면) · 처음으로 알림 · 브라우저 안내 한 줄을 PNG (JJ_SHOT_DIR) 로.
+/// 설정은 메모리에만 (저장하지 않음), 즐겨찾기는 시험 폴더 (JJ_SHOT_TMP).
+void main() {
+  IntegrationTestWidgetsFlutterBinding.ensureInitialized();
+  final out = Platform.environment['JJ_SHOT_DIR'] ?? p.join(Directory.systemTemp.path, 'jj_shots_662');
+  final key = GlobalKey();
+
+  Future<void> settle(WidgetTester t, [int rounds = 10]) async {
+    for (var i = 0; i < rounds; i++) {
+      await t.runAsync(() => Future<void>.delayed(const Duration(milliseconds: 100)));
+      await t.pump();
+    }
+  }
+
+  Future<void> shot(WidgetTester t, String name) async {
+    await settle(t, 3);
+    final b = key.currentContext!.findRenderObject()! as RenderRepaintBoundary;
+    final img = await t.runAsync(() => b.toImage());
+    final bytes = await t.runAsync(() => img!.toByteData(format: ui.ImageByteFormat.png));
+    Directory(out).createSync(recursive: true);
+    File(p.join(out, '$name.png')).writeAsBytesSync(bytes!.buffer.asUint8List());
+  }
+
+  AppController plain() {
+    final c = AppController(PlatformServices(mediaTool: ProcessMediaTool('x', 'y'), storage: DesktopStorageService()));
+    c.settings
+      ..components = ['mkv', 'explorer', 'rsync']
+      ..navOrder = ['mkv', 'explorer', 'rsync'];
+    return c;
+  }
+
+  Future<void> showHome(WidgetTester t, AppController c, Size size) async {
+    t.view.physicalSize = size;
+    t.view.devicePixelRatio = 1;
+    await t.runAsync(() => t.pumpWidget(MaterialApp(
+          theme: buildTheme(),
+          builder: (_, child) => AppScope(controller: c, child: RepaintBoundary(key: key, child: child!)),
+          home: KeyedSubtree(key: UniqueKey(), child: HomePage(c: c)),
+        )));
+    await settle(t);
+  }
+
+  Future<void> swipe(WidgetTester t, Size size, double dx) async {
+    await t.flingFrom(Offset(size.width / 2, size.height / 2), Offset(dx, 0), 2500);
+    await settle(t, 8);
+  }
+
+  testWidgets('66-2: 지금 화면 아이콘 (넓은 · 좁은 화면) · 처음으로 알림', (t) async {
+    for (final (name, size) in [('wide', const Size(1280, 800)), ('narrow', const Size(420, 860))]) {
+      final c = plain();
+      await showHome(t, c, size);
+      await shot(t, 'b3_662_${name}_mkv_current');
+      await swipe(t, size, -size.width * 0.6); // 다음 (파일 탐색기)
+      await shot(t, 'b3_662_${name}_explorer_current');
+      await swipe(t, size, -size.width * 0.6); // Rsync
+      await swipe(t, size, -size.width * 0.6); // 끝 다음 = 처음
+      await shot(t, 'b3_662_${name}_wrap_to_first');
+    }
+  });
+
+  testWidgets('66-2: 웹 브라우저를 처음 열면 위쪽 막대 아래에 안내 한 줄 · 173 브라우저 아이콘도 지금 위치로 파랗게', (t) async {
+    final c = plain();
+    // 실제 앱처럼 웹 브라우저도 화면 목록에 (그래야 위쪽 막대에 브라우저 아이콘이 있다)
+    c.settings
+      ..components = ['mkv', 'browser', 'explorer', 'rsync']
+      ..navOrder = ['mkv', 'browser', 'explorer', 'rsync'];
+    final base = Platform.environment['JJ_SHOT_TMP'];
+    final dir = (base == null || base.isEmpty ? Directory.systemTemp : (Directory(base)..createSync(recursive: true)))
+        .createTempSync('jj_shot_662_');
+    addTearDown(() => dir.deleteSync(recursive: true));
+    final bm = BookmarksController(p.join(dir.path, 'bookmarks.json'));
+    t.view.physicalSize = const Size(1280, 800);
+    t.view.devicePixelRatio = 1;
+    await t.runAsync(() => t.pumpWidget(MaterialApp(
+          theme: buildTheme(),
+          builder: (_, child) => AppScope(controller: c, bookmarks: bm, child: RepaintBoundary(key: key, child: child!)),
+          home: BrowserPage(
+            c: c,
+            bookmarks: bm,
+            initialUrl: 'https://example.com/',
+            viewBuilder: (BrowserHost h, String url) => const ColoredBox(color: Colors.white),
+          ),
+        )));
+    await settle(t);
+    await shot(t, 'b3_662_browser_hint');
+  });
+}
diff --git a/lib/ui/app_actions.dart b/lib/ui/app_actions.dart
index 4fe3a6c..6bc291a 100644
--- a/lib/ui/app_actions.dart
+++ b/lib/ui/app_actions.dart
@@ -308,7 +308,8 @@ class AppNavButtons extends StatelessWidget {
         ),
       btn(const Icon(Icons.arrow_back), tr('뒤로'),
           // 브라우저 화면: 뒤로 키는 웹 페이지 뒤로 (PopScope) 이지만 이 버튼은 화면 이동이라 바로 닫는다
-          atRoot ? null : () => onBrowserPage ? Navigator.pop(context) : Navigator.maybePop(context),
+          // 위쪽 ← 는 늘 화면 닫기 (브라우저 · 탐색기는 뒤로 키가 웹 뒤로 · 선택 풀기 · 상위 폴더를 먼저 하므로 그것을 거치지 않게 - 49)
+          atRoot ? null : () => onBrowserPage || onExplorerPage || onRsyncPage ? Navigator.pop(context) : Navigator.maybePop(context),
           label: tr('뒤로')),
     ]);
   }
diff --git a/lib/ui/explorer_page.dart b/lib/ui/explorer_page.dart
index fa2952d..604588b 100644
--- a/lib/ui/explorer_page.dart
+++ b/lib/ui/explorer_page.dart
@@ -2356,8 +2356,35 @@ class _ExplorerPageState extends State<ExplorerPage> {
 
   // ───────── 화면 ─────────
 
+  /// 49: 뒤로 키가 화면을 닫기 전에 할 일이 있는지 (고른 것이 있거나 맨 위 폴더가 아님)
+  bool get _backHasWork =>
+      _selecting || _panes.any((x) => x.marked.isNotEmpty) || (_ready && !samePath(_pane.current, _pane.root));
+
+  /// 49: 뒤로 키 - 먼저 고른 것 풀기, 그다음 상위 폴더, 맨 위면 화면 닫기 (위쪽 ← 는 늘 닫기)
+  Future<void> _onBack() async {
+    if (_selecting || _panes.any((x) => x.marked.isNotEmpty)) {
+      _setSelecting(false);
+      return;
+    }
+    if (!samePath(_pane.current, _pane.root)) {
+      await _button(ExplorerButton.up);
+      return;
+    }
+    if (mounted) Navigator.of(context).pop();
+  }
+
   @override
   Widget build(BuildContext context) {
+    return PopScope(
+      canPop: !_backHasWork,
+      onPopInvokedWithResult: (didPop, _) {
+        if (!didPop) unawaited(_onBack());
+      },
+      child: _buildPage(context),
+    );
+  }
+
+  Widget _buildPage(BuildContext context) {
     return CallbackShortcuts(
       bindings: {
         const SingleActivator(LogicalKeyboardKey.f5): () => _button(ExplorerButton.refresh),
diff --git a/test/explorer_conflict_test.dart b/test/explorer_conflict_test.dart
index e8ab087..e85b5a2 100644
--- a/test/explorer_conflict_test.dart
+++ b/test/explorer_conflict_test.dart
@@ -1,3 +1,4 @@
+import 'dart:async';
 import 'dart:io';
 
 import 'package:flutter/material.dart';
@@ -208,6 +209,40 @@ void main() {
     expect(find.textContaining('1개를 영구 삭제했습니다.'), findsOneWidget);
   }, skip: !Platform.isWindows);
 
+  testWidgets('49: 뒤로 키 - 먼저 고른 것 풀기 → 상위 폴더 → 맨 위에서 화면 닫기', (tester) async {
+    tester.view.physicalSize = const Size(1600, 900);
+    tester.view.devicePixelRatio = 1;
+    addTearDown(tester.view.reset);
+    // 시험 폴더를 저장 장치 맨 위로 (left 에서 한 번 올라가면 맨 위)
+    ExplorerPage.debugVolumes = () => [(tmp.path, 'T:')];
+    final navKey = GlobalKey<NavigatorState>();
+    await tester.runAsync(() => tester.pumpWidget(MaterialApp(navigatorKey: navKey, home: const Text('앞 화면'))));
+    unawaited(navKey.currentState!.push(MaterialPageRoute<void>(builder: (_) => ExplorerPage(c: c))));
+    await settle(tester, () => find.text('doc.txt').evaluate().isNotEmpty);
+    Future<void> back() async {
+      await tester.runAsync(() => tester.binding.handlePopRoute());
+      await settle(tester, () => false, rounds: 10);
+    }
+
+    // 표시 (선택 모드) 를 켜고 doc.txt 를 고름
+    await tester.runAsync(() => tester.tap(find.text('선택').first));
+    await settle(tester, () => false, rounds: 5);
+    await tester.runAsync(() => tester.tap(find.text('doc.txt').first));
+    await settle(tester, () => false, rounds: 5);
+    expect(find.textContaining('1개 표시함'), findsOneWidget);
+    await back(); // 1) 고른 것 풀기 (화면은 그대로)
+    expect(find.textContaining('표시함'), findsNothing);
+    expect(find.byType(ExplorerPage), findsOneWidget);
+    expect(find.textContaining(p.join(tmp.path, 'left')), findsWidgets, reason: '아직 left 폴더');
+    await back(); // 2) 상위 폴더 (= 맨 위)
+    expect(find.byType(ExplorerPage), findsOneWidget);
+    expect(find.textContaining(p.join(tmp.path, 'left')), findsNothing);
+    await back(); // 3) 맨 위에서는 화면 닫기
+    await tester.pumpAndSettle(); // 닫히는 전환 (가짜 시간을 흘려야 끝난다)
+    expect(find.byType(ExplorerPage), findsNothing);
+    expect(find.text('앞 화면'), findsOneWidget);
+  });
+
   testWidgets('48: 건너뛰기를 고르면 그대로 두고 건너뛴 것을 알린다', (tester) async {
     await startCopy(tester);
     await tester.tap(find.text('건너뛰기'));