diff --git a/C5/app/src/main/AndroidManifest.xml b/C5/app/src/main/AndroidManifest.xml
index d4d43dc..9d9c109 100644
--- a/C5/app/src/main/AndroidManifest.xml
+++ b/C5/app/src/main/AndroidManifest.xml
@@ -3,7 +3,7 @@
     xmlns:tools="http://schemas.android.com/tools"
     package="com.sunvote.xpadapp"
     android:versionCode="70"
-    android:versionName="1.4.0.2"> <!-- android:sharedUserId="android.studentUID.system" -->
+    android:versionName="1.4.0.3"> <!-- android:sharedUserId="android.studentUID.system" -->
 
     <uses-permission android:name="android.permission.CHANGE_NETWORK_STATE"></uses-permission>
     <uses-permission android:name="android.permission.CHANGE_WIFI_STATE"></uses-permission>
diff --git a/C5/app/src/main/java/com/sunvote/xpadapp/MainActivity.java b/C5/app/src/main/java/com/sunvote/xpadapp/MainActivity.java
index 1b459e7..75c0e42 100644
--- a/C5/app/src/main/java/com/sunvote/xpadapp/MainActivity.java
+++ b/C5/app/src/main/java/com/sunvote/xpadapp/MainActivity.java
@@ -274,7 +274,8 @@ public class MainActivity extends BaseActivity implements ComListener {
 
         clearApkFile();
         FirmUpdateFragment.clearUpdateFile();
-        setOnlineFragment();
+//        setOnlineFragment();
+        setOfflineFragment();
         if(!isUnlock()){
             setUnlockScreen();
         }
@@ -1713,7 +1714,7 @@ public class MainActivity extends BaseActivity implements ComListener {
 
         }
 
-        mOnlineInfo = info;
+        mOnlineInfo = (OnLineInfo) info.clone();
         runOnUiThread(new Runnable() {
             @Override
             public void run() {
diff --git a/C5/app/src/main/java/com/sunvote/xpadapp/presenter/XPadPresenter.java b/C5/app/src/main/java/com/sunvote/xpadapp/presenter/XPadPresenter.java
index 69e8bb2..2ef5366 100644
--- a/C5/app/src/main/java/com/sunvote/xpadapp/presenter/XPadPresenter.java
+++ b/C5/app/src/main/java/com/sunvote/xpadapp/presenter/XPadPresenter.java
@@ -193,7 +193,7 @@ public class XPadPresenter implements ComListener {
 	public void onOnLineEvent(OnLineInfo info) {
 		lastRecvHeartBeatTime = System.currentTimeMillis();
 		cl.onOnLineEvent(info);
-		if(mModelInfo==null){
+		if(mModelInfo==null && info.onLine == 1){
 			getWorkMode();
 		}
 		try {
@@ -201,7 +201,7 @@ public class XPadPresenter implements ComListener {
 		} catch (InterruptedException e) {
 			LogUtil.e(TAG,e);
 		}
-		if(mKeypadInfo == null){
+		if(mKeypadInfo == null && info.onLine == 1){
 			getKeypadParam();
 		}
 
diff --git a/C5/app/src/main/java/com/sunvote/xpadcomm/XPadApi.java b/C5/app/src/main/java/com/sunvote/xpadcomm/XPadApi.java
index 03fc79e..bb5b399 100644
--- a/C5/app/src/main/java/com/sunvote/xpadcomm/XPadApi.java
+++ b/C5/app/src/main/java/com/sunvote/xpadcomm/XPadApi.java
@@ -93,13 +93,13 @@ public class XPadApi implements XPadApiInterface {
                         mBuffer[4] = 0x70;
                         mBuffer[5] = 0x03;
                         writeToCom(mBuffer);
-                    }
+
                     try {
                         Thread.sleep(100);
                     } catch (InterruptedException e) {
                         e.printStackTrace();
                     }
-                    byte[] mBuffer = new byte[0x1F + 4];
+                   mBuffer = new byte[0x1F + 4];
                     Arrays.fill(mBuffer, (byte) 0x0);
                     mBuffer[0] = (byte) 0xF5;
                     mBuffer[1] = (byte) 0xAA;
@@ -109,6 +109,10 @@ public class XPadApi implements XPadApiInterface {
                     mBuffer[4] = 0x70;
                     mBuffer[5] = 0x04;
                     writeToCom(mBuffer);
+                    }else{
+                        onLineInfo.onLine = 2 ;
+                        m_listener.onOnLineEvent(onLineInfo);
+                    }
                     return true;
                 }
             });
diff --git a/C5/app/src/main/java/com/sunvote/xpadcomm/XPadApiInterface.java b/C5/app/src/main/java/com/sunvote/xpadcomm/XPadApiInterface.java
index 116e8df..2b164e3 100644
--- a/C5/app/src/main/java/com/sunvote/xpadcomm/XPadApiInterface.java
+++ b/C5/app/src/main/java/com/sunvote/xpadcomm/XPadApiInterface.java
@@ -181,6 +181,23 @@ public interface XPadApiInterface {
 
 			return Arrays.hashCode(new Object[]{onLine, idMode, chan, rssi, tx, rx, baseId, keyId, keySn, comError});
 		}
+
+		@Override
+		public Object clone(){
+			OnLineInfo lineInfo = new OnLineInfo();
+			lineInfo.onLine = onLine;
+			lineInfo.idMode = idMode;
+			lineInfo.chan = chan;
+			lineInfo.rssi = rssi;
+			lineInfo.tx = tx;
+			lineInfo.rx = rx;
+			lineInfo.baseId = baseId;
+			lineInfo.keyId = keyId;
+			lineInfo.keySn = new String(keySn);
+			lineInfo.comError = comError;
+
+			return lineInfo;
+		}
 	}
 
 
diff --git a/C5/app/src/main/java/com/sunvote/xpadcomm/usb/UsbTransferManager.java b/C5/app/src/main/java/com/sunvote/xpadcomm/usb/UsbTransferManager.java
index a5e51c8..515802f 100644
--- a/C5/app/src/main/java/com/sunvote/xpadcomm/usb/UsbTransferManager.java
+++ b/C5/app/src/main/java/com/sunvote/xpadcomm/usb/UsbTransferManager.java
@@ -272,6 +272,9 @@ public class UsbTransferManager {
                 workHandler.post(usbConnectionReceiverTask);
             }
         }else{
+            if(onUsbConnectListener != null){
+                onUsbConnectListener.onConnect(false);
+            }
             LogUtil.d(TAG, "未连接：" + ref);
         }
         return ref;