diff --git a/build.gradle b/build.gradle
index 37aaec9..8e4eb47 100644
--- a/build.gradle
+++ b/build.gradle
@@ -14,8 +14,8 @@ buildscript {
         junitVersion = '4.13'
         androidTestVersion = '1.2.0'
         androidEspressoVersion = '3.2.0'
-        versionCode = 5000350
-        versionName = '5.0.3-nightly'
+        versionCode = 5000351
+        versionName = '5.0.3.1-nightly'
         resConfigs = ['ar', 'es', 'fa', 'fr', 'ja', 'ko', 'ru', 'tr', 'zh-rCN', 'zh-rTW']
     }
 
diff --git a/core/src/main/AndroidManifest.xml b/core/src/main/AndroidManifest.xml
index 4571b0b..bf63732 100644
--- a/core/src/main/AndroidManifest.xml
+++ b/core/src/main/AndroidManifest.xml
@@ -33,7 +33,7 @@
         <meta-data android:name="android.webkit.WebView.EnableSafeBrowsing"
                    android:value="true" />
         <meta-data android:name="com.google.android.backup.api_key"
-                   android:value="AEdPqrEAAAAI_zVxZthz2HDuz9toTvkYvL0L5GA-OjeUIfBeXg"/>
+                   android:value="AEdPqrEAAAAIENnFBzugt9171NjZ_etNgRcwZ93KmEl3HN8tXQ"/>
 
         <service
             android:name="com.github.shadowsocks.bg.VpnService"
diff --git a/core/src/main/java/com/github/shadowsocks/Core.kt b/core/src/main/java/com/github/shadowsocks/Core.kt
index d9712c5..26f1483 100644
--- a/core/src/main/java/com/github/shadowsocks/Core.kt
+++ b/core/src/main/java/com/github/shadowsocks/Core.kt
@@ -48,6 +48,7 @@ import com.github.shadowsocks.preference.DataStore
 import com.github.shadowsocks.work.SSRSubSyncer
 import com.github.shadowsocks.subscription.SubscriptionService
 import com.github.shadowsocks.utils.*
+import com.github.shadowsocks.work.UpdateCheck
 import com.google.firebase.FirebaseApp
 import com.google.firebase.analytics.FirebaseAnalytics
 import io.fabric.sdk.android.Fabric
@@ -126,7 +127,7 @@ object Core {
             setExecutor { GlobalScope.launch { it.run() } }
             setTaskExecutor { GlobalScope.launch { it.run() } }
         }.build())
-        //UpdateCheck.enqueue() //google play Publishing, prohibiting self-renewal
+        UpdateCheck.enqueue() //google play Publishing, prohibiting self-renewal
 
         // handle data restored/crash
         if (Build.VERSION.SDK_INT >= 24 && DataStore.directBootAware &&
diff --git a/core/src/main/java/com/github/shadowsocks/bg/ProxyInstance.kt b/core/src/main/java/com/github/shadowsocks/bg/ProxyInstance.kt
index f43f991..5bd7a0a 100644
--- a/core/src/main/java/com/github/shadowsocks/bg/ProxyInstance.kt
+++ b/core/src/main/java/com/github/shadowsocks/bg/ProxyInstance.kt
@@ -52,36 +52,6 @@ class ProxyInstance(val profile: Profile, private val route: String = profile.ro
     private var scheduleConfigUpdate = false
 
     suspend fun init(service: BaseService.Interface, hosts: HostsFile) {
-        if (profile.isSponsored) {
-            scheduleConfigUpdate = true
-            val mdg = MessageDigest.getInstance("SHA-1")
-            mdg.update(Core.packageInfo.signaturesCompat.first().toByteArray())
-            val (config, success) = RemoteConfig.fetch()
-            scheduleConfigUpdate = !success
-            val conn = withContext(Dispatchers.IO) {
-                // Network.openConnection might use networking, see https://issuetracker.google.com/issues/135242093
-                service.openConnection(URL(config.getString("proxy_url"))) as HttpURLConnection
-            }
-            conn.requestMethod = "POST"
-            conn.doOutput = true
-
-            val proxies = conn.useCancellable {
-                try {
-                    outputStream.bufferedWriter().use {
-                        it.write("sig=" + Base64.encodeToString(mdg.digest(), Base64.DEFAULT))
-                    }
-                    inputStream.bufferedReader().readText()
-                } catch (e: IOException) {
-                    throw BaseService.ExpectedExceptionWrapper(e)
-                }
-            }.split('|').toMutableList()
-            proxies.shuffle()
-            val proxy = proxies.first().split(':')
-            profile.host = proxy[0].trim()
-            profile.remotePort = proxy[1].trim().toInt()
-            profile.password = proxy[2].trim()
-            profile.method = proxy[3].trim()
-        }
 
         // it's hard to resolve DNS on a specific interface so we'll do it here
         if (profile.host.parseNumericAddress() == null) {
diff --git a/core/src/main/java/com/github/shadowsocks/database/Profile.kt b/core/src/main/java/com/github/shadowsocks/database/Profile.kt
index 5b1bdb2..fa15323 100644
--- a/core/src/main/java/com/github/shadowsocks/database/Profile.kt
+++ b/core/src/main/java/com/github/shadowsocks/database/Profile.kt
@@ -60,8 +60,8 @@ data class Profile(
         var password: String = "u1rRWTssNv0p",
         var method: String = "aes-256-cfb",
 
-        var route: String = "all",
-        var remoteDns: String = "dns.google",
+        var route: String = "bypass-lan-china",
+        var remoteDns: String = "1.1.1.1",
         var proxyApps: Boolean = false,
         var bypass: Boolean = false,
         var udpdns: Boolean = false,
diff --git a/core/src/main/java/com/github/shadowsocks/work/UpdateCheck.kt b/core/src/main/java/com/github/shadowsocks/work/UpdateCheck.kt
index bbd91a8..71eeb05 100644
--- a/core/src/main/java/com/github/shadowsocks/work/UpdateCheck.kt
+++ b/core/src/main/java/com/github/shadowsocks/work/UpdateCheck.kt
@@ -24,9 +24,7 @@ import java.util.concurrent.TimeUnit
 
 class UpdateCheck(context: Context, workerParams: WorkerParameters) : CoroutineWorker(context, workerParams) {
     companion object {
-        const val url ="" //google play 发布，禁止自主更新
-        //const val url = "https://raw.githubusercontent.com/bannedbook/SpeedUp.VPN/master/update.json"
-
+        const val url ="https://raw.githubusercontent.com/bannedbook/ssvpn/master/update.json" //google play 发布，禁止自主更新
         fun enqueue() = WorkManager.getInstance(Core.deviceStorage).enqueueUniquePeriodicWork(
                 "UpdateCheck", ExistingPeriodicWorkPolicy.KEEP,
                 PeriodicWorkRequestBuilder<UpdateCheck>(1, TimeUnit.DAYS).run {
diff --git a/gitupdate.bat b/gitupdate.bat
index a5c824a..0070ceb 100644
--- a/gitupdate.bat
+++ b/gitupdate.bat
@@ -3,6 +3,6 @@ git pull origin master
 git add -A
 git commit -m "update"
 git push origin master
-git tag -a v5.0.3 -m "release v5.0.3"
+git tag -a v5.0.3.1 -m "release v5.0.3.1"
 git push origin --tags
 pause
\ No newline at end of file