diff --git a/GameSDKDemo/build.gradle b/GameSDKDemo/build.gradle
index dd05d23..1c4bf6f 100644
--- a/GameSDKDemo/build.gradle
+++ b/GameSDKDemo/build.gradle
@@ -36,7 +36,7 @@ repositories {
 }
 
 android {
-    compileSdkVersion 28
+    compileSdkVersion 30
     buildToolsVersion '28.0.3'
 
     signingConfigs {
@@ -50,10 +50,10 @@ android {
 
     defaultConfig {
         minSdkVersion 14
-        targetSdkVersion 27
-        applicationId "mx.she.rd4"
-        versionCode 6
-        versionName "1.4"
+        targetSdkVersion 30
+        applicationId "com.summon.empires2"
+        versionCode 38
+        versionName "1.0.3"
         testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
         signingConfig signingConfigs.release
     }
@@ -86,14 +86,14 @@ android {
 dependencies {
     implementation fileTree(include: ['*.jar'], dir: 'libs')
 //    implementation 'com.android.support:support-v4:27.1.1'
-    implementation 'androidx.appcompat:appcompat:1.1.0'
-    implementation 'androidx.fragment:fragment:1.1.0'
-    implementation 'com.google.android.material:material:1.0.0'
+    implementation 'androidx.appcompat:appcompat:1.2.0'
+    implementation 'androidx.fragment:fragment:1.2.5'
+    implementation 'com.google.android.material:material:1.2.1'
     testImplementation 'junit:junit:4.12'
 //    implementation 'com.android.support:appcompat-v7:27.1.1'
 //    implementation 'com.android.support:design:27.1.1'
-//    implementation project(':GameSDK')
+    implementation project(':GameSDK')
 //    implementation project(':IAP5Helper')
-    implementation 'com.gumptech.sdk:GameSDK:4.8.0'
+//    implementation 'com.gumptech.sdk:GameSDK:4.8.0'
 //    implementation 'com.gump.game.sdk:SamsungIAP:5.1.1'
 }
diff --git a/GameSDKDemo/src/main/java/com/gump/game/sdk/demo/MainActivity.java b/GameSDKDemo/src/main/java/com/gump/game/sdk/demo/MainActivity.java
index e648099..2d8c912 100644
--- a/GameSDKDemo/src/main/java/com/gump/game/sdk/demo/MainActivity.java
+++ b/GameSDKDemo/src/main/java/com/gump/game/sdk/demo/MainActivity.java
@@ -30,15 +30,15 @@ public class MainActivity extends AppCompatActivity implements RechargeCallback
     private Button btnPay;
     private Button btnIap;
 
-    private String appId = "100";
-    private String appKey = "f899139df5e1059396431415e770c6dd";
+    private String appId = "10117";
+    private String channelId = "1030";
     private GumpUser gumpUser;
 
     /**
      * 测试数据
      */
-    String serverId = "100";
-    String roleId = "41080";
+    String serverId = "S168";
+    String roleId = "168000089";
 
 
     @Override
@@ -163,7 +163,7 @@ public class MainActivity extends AppCompatActivity implements RechargeCallback
         /**
          * 初始化sdk
          */
-        GameSDK.init(getApplicationContext(), appId);
+        GameSDK.init(getApplicationContext(), appId,channelId);
 
         tvVersion.setText("SDK Version:" + GameSDK.getVersion());
 
diff --git a/README.md b/README.md
index 964c51b..9a28b7f 100644
--- a/README.md
+++ b/README.md
@@ -1,7 +1,7 @@
 # Gump SDK 4 for Android接入文档
 
-V4.8.6       
-2020年08月6日
+V4.9.0       
+2021年06月21日
 
 
 ## 版本概述
@@ -21,7 +21,7 @@ repositories{
 	}
 }
 dependencies {
-    implementation 'com.gumptech.sdk:GameSDK:4.8.6'
+    implementation 'com.gumptech.sdk:GameSDK:4.9.0'
 
 }
 ```
@@ -34,8 +34,6 @@ dependencies {
 <uses-permission android:name="android.permission.INTERNET" />
 <uses-permission android:name="android.permission.ACCESS_WIFI_STATE" />
 <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/>
-<!-- VERY IMPORTANT! Don't forget this permission, or in-app billing won't work. -->
-<uses-permission android:name="com.android.vending.BILLING" />
 ```
 
 其次注册相应的Activity，具体如下：