diff --git a/openless-all/app/src-tauri/src/coordinator.rs b/openless-all/app/src-tauri/src/coordinator.rs
index 9618e30d..ba9cca35 100644
--- a/openless-all/app/src-tauri/src/coordinator.rs
+++ b/openless-all/app/src-tauri/src/coordinator.rs
@@ -1388,6 +1388,8 @@ async fn end_session(inner: &Arc<Inner>) -> Result<(), String> {
                         "[coord] 全局超时 {} 秒 - 强制恢复",
                         COORDINATOR_GLOBAL_TIMEOUT_SECS
                     );
+                    // 清理 ASR session，避免资源泄漏
+                    asr.cancel();
                     emit_capsule(
                         inner,
                         CapsuleState::Error,
@@ -2286,13 +2288,26 @@ async fn end_qa_session(inner: &Arc<Inner>) -> Result<(), String> {
     if let Err(e) = asr.send_last_frame().await {
         log::error!("[coord] QA: send last frame failed: {e}");
     }
-    let raw = match asr.await_final_result().await {
-        Ok(r) => r,
-        Err(e) => {
+    // 添加全局超时保护：防止 await_final_result() 永远挂起
+    let timeout_duration = std::time::Duration::from_secs(COORDINATOR_GLOBAL_TIMEOUT_SECS);
+    let raw = match tokio::time::timeout(timeout_duration, asr.await_final_result()).await {
+        Ok(Ok(r)) => r,
+        Ok(Err(e)) => {
             log::error!("[coord] QA: await final failed: {e}");
             finish_qa_with_error(inner, format!("识别失败: {e}"));
             return Err(e.to_string());
         }
+        Err(_) => {
+            // 全局超时：最后的防线
+            log::error!(
+                "[coord] QA: 全局超时 {} 秒 - 强制恢复",
+                COORDINATOR_GLOBAL_TIMEOUT_SECS
+            );
+            // 清理 ASR session，避免资源泄漏
+            asr.cancel();
+            finish_qa_with_error(inner, "识别超时".to_string());
+            return Err("global timeout".to_string());
+        }
     };
 
     // cancel race：用户在 transcribe 中按 Esc / dismiss → 静默退出。
diff --git a/openless-all/app/src-tauri/src/recorder.rs b/openless-all/app/src-tauri/src/recorder.rs
index e52fb3f3..78b22385 100644
--- a/openless-all/app/src-tauri/src/recorder.rs
+++ b/openless-all/app/src-tauri/src/recorder.rs
@@ -330,7 +330,8 @@ impl StreamState {
             callback_count: AtomicUsize::new(0),
             peak_input_rms_milli: AtomicUsize::new(0),
             peak_output_rms_milli: AtomicUsize::new(0),
-            last_callback_time: Mutex::new(Some(std::time::Instant::now())),
+            // 初始化为 None，只有在第一次回调后才开始计时，避免误报慢启动设备
+            last_callback_time: Mutex::new(None),
         }
     }
 }
diff --git a/openless-all/app/src/components/AutoUpdate.tsx b/openless-all/app/src/components/AutoUpdate.tsx
index 40f96d85..d5c3ec58 100644
--- a/openless-all/app/src/components/AutoUpdate.tsx
+++ b/openless-all/app/src/components/AutoUpdate.tsx
@@ -7,7 +7,7 @@ import { useTranslation } from 'react-i18next';
 import { isTauri, restartApp } from '../lib/ipc';
 import { Btn } from '../pages/_atoms';
 
-const UPDATE_CHECK_TIMEOUT_MS = 15_000;
+const UPDATE_CHECK_TIMEOUT_MS = 8_000; // 缩短超时，让镜像站慢的情况能更快 fallback
 
 export type UpdateStatus =
   | 'idle'