diff --git a/engine.spec b/engine.spec
index 0f8c36b..40e7a4c 100644
--- a/engine.spec
+++ b/engine.spec
@@ -16,9 +16,22 @@ _SPEC_ROOT = os.path.abspath(SPECPATH)
 # root (dest '.') de find_bridge_exe (frozen: exe_dir = thu muc chua
 # sys.executable = dist/daw_engine) tu dong tim thay. Chi build tren Windows.
 if os.name == 'nt':
-    _bridge_dir = os.path.join(_SPEC_ROOT, 'native_bridge', 'build', 'Release')
-    for _b in ('daw_vst_bridge.exe', 'fx_vst_bridge.exe', 'jpeg62.dll', 'libfluidsynth-3.dll', 'plugin_host.exe'):
-        _bp = os.path.join(_bridge_dir, _b)
+    # 2 nguon build LECH NHAU (build_windows.ps1 [2]): exe tu MSBuild
+    # bridge-win\Release, DLL tu CMake build\Release. Truoc day engine.spec chi
+    # nhin build\Release -> bundle chua fx_vst_bridge.exe CU/HONG (282KB,
+    # --scan crash c0000409 ngay ca voi dir khong ton tai). Lay tung loai tu
+    # dung nguon, co fallback ve build\Release cho checkout cu.
+    _exe_dir = os.path.join(_SPEC_ROOT, 'native_bridge', 'build', 'bridge-win', 'Release')
+    _dll_dir = os.path.join(_SPEC_ROOT, 'native_bridge', 'build', 'Release')
+    if not os.path.isdir(_exe_dir):
+        print("WARN: khong thay bridge-win/Release - fallback ve build/Release (bridge co the cu)")
+        _exe_dir = _dll_dir
+    for _b in ('daw_vst_bridge.exe', 'fx_vst_bridge.exe', 'plugin_host.exe'):
+        _bp = os.path.join(_exe_dir, _b)
+        if os.path.exists(_bp):
+            binaries.append((_bp, '.'))
+    for _b in ('jpeg62.dll', 'libfluidsynth-3.dll'):
+        _bp = os.path.join(_dll_dir, _b)
         if os.path.exists(_bp):
             binaries.append((_bp, '.'))
     # G3: JUCE FX bridge (graph latency + processed samples) - bundle rieng vi