diff --git a/lib/data/services/ble_manager.dart b/lib/data/services/ble_manager.dart
index 1c921fa07..73fc14b9e 100644
--- a/lib/data/services/ble_manager.dart
+++ b/lib/data/services/ble_manager.dart
@@ -472,13 +472,37 @@ class BleManager extends GetxService {
           firmwareProductColor: '',
         );
       }
-
-      // 并行获取所有设备信息，不使用延迟
-      final results = await Future.wait([
-        _bleService.getBatteryInfo(),
-        _bleService.getDeviceVersion(),
-        _bleService.getProductId(),
-      ]);
+      final commands = [
+        _bleService.getBatteryInfo,
+        _bleService.getDeviceVersion,
+        _bleService.getProductId,
+      ];
+
+      final delays = [
+        Duration.zero, // 第一个命令立即执行
+        const Duration(milliseconds: 100), // 第二个命令延迟100ms
+        const Duration(milliseconds: 200), // 第三个命令延迟200ms
+      ];
+
+      final futures = commands
+          .asMap()
+          .map((index, command) {
+            final delay = delays[index];
+            return MapEntry(
+              index,
+              Future.delayed(delay, command),
+            );
+          })
+          .values
+          .toList();
+
+      final results = await Future.wait(futures);
+      // // 并行获取所有设备信息，不使用延迟
+      // final results = await Future.wait([
+      //   _bleService.getBatteryInfo(),
+      //   _bleService.getDeviceVersion(),
+      //   _bleService.getProductId(),
+      // ]);
 
       Logger.info(
           '设备信息获取结果: 电池=${results[0]}, 版本=${results[1]}, 产品ID=${results[2]}');
diff --git a/local_plugins/ota/android/src/main/kotlin/com/example/ota/OtaPlugin.kt b/local_plugins/ota/android/src/main/kotlin/com/example/ota/OtaPlugin.kt
index 8f68906de..c030cb725 100644
--- a/local_plugins/ota/android/src/main/kotlin/com/example/ota/OtaPlugin.kt
+++ b/local_plugins/ota/android/src/main/kotlin/com/example/ota/OtaPlugin.kt
@@ -337,10 +337,10 @@ class OtaPlugin : BleService.Callback, FlutterPlugin, MethodCallHandler {
             BleService.isEnterOta = false
             isDisconnect = false
             if(otaManager!= null) {
-                
-            otaManager?.bluetoothHelper?.stopScan()
-
-            otaManager?.bluetoothHelper?.disconnectDevice(otaDevice)
+                BleService.removeCallback(this)
+                otaManager?.release()
+                otaManager= null
+                bluetoothHelper=null
             }
             result.success("")
         } else {