diff --git a/common/src/main/java/com/xypower/common/MicroPhotoContext.java b/common/src/main/java/com/xypower/common/MicroPhotoContext.java
index 1801ddf6..2ff4475b 100644
--- a/common/src/main/java/com/xypower/common/MicroPhotoContext.java
+++ b/common/src/main/java/com/xypower/common/MicroPhotoContext.java
@@ -1,10 +1,11 @@
 package com.xypower.common;
 
 import android.app.ActivityManager;
-import android.app.Service;
 import android.content.Context;
 import android.content.Intent;
 import android.content.pm.PackageManager;
+import android.net.ConnectivityManager;
+import android.net.Network;
 import android.os.Environment;
 import android.os.storage.StorageManager;
 import android.text.TextUtils;
@@ -22,8 +23,6 @@ import java.io.InputStreamReader;
 import java.io.OutputStreamWriter;
 import java.io.UnsupportedEncodingException;
 import java.lang.reflect.Method;
-import java.text.NumberFormat;
-import java.util.HashMap;
 import java.util.List;
 
 public class MicroPhotoContext {
@@ -32,7 +31,7 @@ public class MicroPhotoContext {
     public static final String PACKAGE_NAME_MPMASTER = "com.xypower.mpmaster";
     public static final String ACTION_HEARTBEAT_MP = "com.xypower.mpapp.ACT_HB";
 
-    public final static String DEFAULT_MASTER_URL = "http://180.166.218.222:40101/";
+    public final static String DEFAULT_MASTER_URL = "http://61.169.135.150:40101/";
     public final static String MASTER_URL_CMDID = "cmdid";
     public final static int DEFAULT_PROTOCOL = 0xFF00;
     public final static int DEFAULT_HEARTBEAT_TIME_FOR_SEPARATE_NW = 575; //   9:35