diff --git a/mpmaster/src/main/java/com/xypower/mpmaster/MpMasterService.java b/mpmaster/src/main/java/com/xypower/mpmaster/MpMasterService.java
index 0953daeb..31403c38 100644
--- a/mpmaster/src/main/java/com/xypower/mpmaster/MpMasterService.java
+++ b/mpmaster/src/main/java/com/xypower/mpmaster/MpMasterService.java
@@ -417,22 +417,33 @@ public class MpMasterService extends Service {
     }
 
     public String getMpAppVersion() {
-        if (TextUtils.isEmpty(mMpAppVersion)) {
-            PackageManager packageManager = getPackageManager();
-            PackageInfo packageInfo = null;
-            try {
-                packageInfo = packageManager.getPackageInfo(MicroPhotoContext.PACKAGE_NAME_MPAPP, 0);
-            } catch (Exception ex) {
-                ex.printStackTrace();
-            }
-            mMpAppVersion = packageInfo == null ? "" : packageInfo.versionName;
+        if (!TextUtils.isEmpty(mMpAppVersion)) {
+            return mMpAppVersion;
+        }
+
+        String version = buildMpAppVersion(getApplicationContext());
+        mMpAppVersion = version;
+        return version;
+    }
+
+    public static String buildMpAppVersion(Context context) {
+        String version = null;
+        PackageManager packageManager = context.getPackageManager();
+        PackageInfo packageInfo = null;
+        try {
+            packageInfo = packageManager.getPackageInfo(MicroPhotoContext.PACKAGE_NAME_MPAPP, 0);
+        } catch (Exception ex) {
+            ex.printStackTrace();
         }
-        return mMpAppVersion;
+
+        version = packageInfo == null ? "" : packageInfo.versionName;
+        return version;
     }
 
-    public static void resetVersions() {
+    public static void resetVersions(Context context) {
         mMpAppVersion = null;
         mMpMasterVersion = null;
+        mMpAppVersion = buildMpAppVersion(context);
     }
 
     public String getMasterAppVersion() {
diff --git a/mpmaster/src/main/java/com/xypower/mpmaster/UpdateReceiver.java b/mpmaster/src/main/java/com/xypower/mpmaster/UpdateReceiver.java
index 0085a8e0..9fd79613 100644
--- a/mpmaster/src/main/java/com/xypower/mpmaster/UpdateReceiver.java
+++ b/mpmaster/src/main/java/com/xypower/mpmaster/UpdateReceiver.java
@@ -28,14 +28,14 @@ public class UpdateReceiver extends BroadcastReceiver {
     private void packageChanged(Context context, String action, String packageName, String targetPackageName) {
         if (action.equals(Intent.ACTION_PACKAGE_REPLACED)) { // Upgrade Broadcast
             Log.e(TAG, "onReceive:Upgraded and Restart the App:" + targetPackageName);
-            MpMasterService.resetVersions();
+            MpMasterService.resetVersions(context);
             if (packageName.equals("package:" + targetPackageName)) {
                 // SysApi.enableApp(context, targetPackageName);
                 restartAPP(context, targetPackageName);
             }
         } else if (action.equals(Intent.ACTION_PACKAGE_ADDED)) {// Install broadcast
             Log.e(TAG, "onReceive:Installed and Start the App:" + targetPackageName);
-            MpMasterService.resetVersions();
+            MpMasterService.resetVersions(context);
             if (packageName.equals("package:" + targetPackageName)) {
                 /*SystemUtil.reBootDevice();*/
                 // SysApi.enableApp(context, targetPackageName);
@@ -49,14 +49,14 @@ public class UpdateReceiver extends BroadcastReceiver {
     private void packageChanged(Context context, String action, String packageName, String targetPackageName, String aliveFileName) {
         if (action.equals(Intent.ACTION_PACKAGE_REPLACED)) { // Upgrade Broadcast
             Log.e(TAG, "onReceive:Upgraded and Restart the App:" + targetPackageName);
-            MpMasterService.resetVersions();
+            MpMasterService.resetVersions(context);
             if (packageName.equals("package:" + targetPackageName)) {
                 // SysApi.enableApp(context, targetPackageName);
                 tryToRestartApp(context, targetPackageName);
             }
         } else if (action.equals(Intent.ACTION_PACKAGE_ADDED)) {// Install broadcast
             Log.e(TAG, "onReceive:Installed and Start the App:" + targetPackageName);
-            MpMasterService.resetVersions();
+            MpMasterService.resetVersions(context);
             if (packageName.equals("package:" + targetPackageName)) {
                 /*SystemUtil.reBootDevice();*/
                 // SysApi.enableApp(context, targetPackageName);