diff --git a/mpmaster/src/main/java/com/xypower/mpmaster/AppMaster.java b/mpmaster/src/main/java/com/xypower/mpmaster/AppMaster.java
index c1086c90..223d404e 100644
--- a/mpmaster/src/main/java/com/xypower/mpmaster/AppMaster.java
+++ b/mpmaster/src/main/java/com/xypower/mpmaster/AppMaster.java
@@ -898,7 +898,7 @@ public class AppMaster {
             Context context = mService.getApplicationContext();
             mService.logger.info("Upgrade OTA: " + url);
 
-            SysApi.installOTA(context, context.getPackageName(), otaPath);
+            mService.installOTA(otaPath);
         } else {
             mService.logger.warning("Failed to Download:" + url);
         }
@@ -921,12 +921,12 @@ public class AppMaster {
 
             final String mpAppDir = MicroPhotoContext.buildMpAppDir(mService.getApplicationContext());
             final File logDir = new File(mpAppDir + "logs" + File.separator);
-            if (!logDir.exists()) {
-                return;
-            }
 
             List<File> folders = new ArrayList<>();
-            folders.add(logDir);
+
+            if (logDir.exists()) {
+                folders.add(logDir);
+            }
 
             final String masterAppDir = MicroPhotoContext.buildMasterAppDir(mService.getApplicationContext());
             final File mlogDir = new File(masterAppDir + "logs" + File.separator);
@@ -934,6 +934,11 @@ public class AppMaster {
                 folders.add(mlogDir);
             }
 
+            if (folders.isEmpty()) {
+                mService.logger.warning("Both Log Directories are not Existed");
+                return;
+            }
+
             ZipUtils.Filter filter = new ZipUtils.Filter() {
                 @Override
                 public boolean match(String fileName) {
diff --git a/mpmaster/src/main/java/com/xypower/mpmaster/MpMasterService.java b/mpmaster/src/main/java/com/xypower/mpmaster/MpMasterService.java
index 68f19808..8f582063 100644
--- a/mpmaster/src/main/java/com/xypower/mpmaster/MpMasterService.java
+++ b/mpmaster/src/main/java/com/xypower/mpmaster/MpMasterService.java
@@ -469,7 +469,7 @@ public class MpMasterService extends Service {
 
         MicroPhotoContext.AppConfig appConfig = MicroPhotoContext.getMpAppConfig(getApplicationContext());
 
-        logger.warning("Start Mntn report:" + masterUrl + " Mntn Mode=" + Boolean.toString(mMntnMode) + " QuickHB=" + Boolean.toString(mQuickHbMode));
+        logger.warning("Start Mntn report: " + masterUrl + " Mntn Mode=" + Boolean.toString(mMntnMode) + " QuickHB=" + Boolean.toString(mQuickHbMode));
 
         AppMaster appMaster = new AppMaster(this, masterUrl, appConfig.cmdid, bundleWithMpApp);
         appMaster.start();
@@ -524,27 +524,21 @@ public class MpMasterService extends Service {
 
                 String cmd = intent.getStringExtra("cmd");
                 String msg = intent.getStringExtra("msg");
-                // Log.e("_otg_","cmd="+cmd);
-                if("write".equals(cmd))
-                {
+                // mService.logger.info("cmd=" + cmd + " msg=" + msg);
+                if("write".equals(cmd)) {
                     // int progress = Integer.parseInt(msg);
                 }
-                else if("update".equals(cmd))
-                {
+                else if("update".equals(cmd)) {
                     // int progress = Integer.parseInt(msg);
                 }
-                else if("info".equals(cmd))
-                {
-
+                else if("info".equals(cmd)) {
                 }
-                else if("error".equals(cmd))
-                {
+                else if("error".equals(cmd)) {
                     mService.logger.warning("UPD OTA Failed");
                 }
-                else if("success".equals(cmd))
-                {
+                else if("success".equals(cmd)) {
                     //confirm to reboot device ??
-                    mService.logger.warning("UPD OTA Succeeded, will RESET dev");
+                    mService.logger.warning("UPD OTA Succeeded, will REBOOT device");
                     Handler handler = new Handler();
                     handler.postDelayed(new Runnable() {
                         @Override
@@ -568,6 +562,17 @@ public class MpMasterService extends Service {
         }
     }
 
+    public void installOTA(final String path) {
+        final Context context = getApplicationContext();
+        mHander.post(new Runnable() {
+            @Override
+            public void run() {
+                SysApi.installOTA(context, context.getPackageName(), path);
+            }
+        });
+
+    }
+
     private void registerHeartbeatTimer() {
 
         long timeout = mHeartbeatDuration;