diff --git a/src/main/AndroidManifest.xml b/src/main/AndroidManifest.xml
index 1c36a6e4..4f33c818 100644
--- a/src/main/AndroidManifest.xml
+++ b/src/main/AndroidManifest.xml
@@ -1,7 +1,7 @@
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
     package="com.github.shadowsocks"
     android:versionCode="112"
-    android:versionName="2.7.4">
+    android:versionName="2.7.5">
 
   <uses-permission android:name="android.permission.INTERNET"/>
   <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/>
diff --git a/src/main/jni/shadowsocks-libev b/src/main/jni/shadowsocks-libev
index 23ff3bf9..b3911fc8 160000
--- a/src/main/jni/shadowsocks-libev
+++ b/src/main/jni/shadowsocks-libev
@@ -1 +1 @@
-Subproject commit 23ff3bf96aec807a2e3e31d4a80fcab6e56c11f2
+Subproject commit b3911fc84fe9dd269fd53b1c9767433f84050415
diff --git a/src/main/scala/com/github/shadowsocks/Shadowsocks.scala b/src/main/scala/com/github/shadowsocks/Shadowsocks.scala
index 7775f854..5809a927 100644
--- a/src/main/scala/com/github/shadowsocks/Shadowsocks.scala
+++ b/src/main/scala/com/github/shadowsocks/Shadowsocks.scala
@@ -399,6 +399,11 @@ class Shadowsocks
   def prepareStartService() {
     showProgress(getString(R.string.connecting))
     spawn {
+      if (!status.getBoolean(getVersionName, false)) {
+        status.edit.putBoolean(getVersionName, true).commit()
+        install()
+      }
+
       if (isVpnEnabled) {
         val intent = VpnService.prepare(this)
         if (intent != null) {
@@ -476,13 +481,7 @@ class Shadowsocks
 
     // Update the profile
     if (!status.getBoolean(getVersionName, false)) {
-      val h = showProgress(getString(R.string.initializing))
-      status.edit.putBoolean(getVersionName, true).apply()
       currentProfile = profileManager.create()
-      spawn {
-        install()
-        h.sendEmptyMessage(0)
-      }
     }
 
     // Initialize the profile
diff --git a/src/main/scala/com/github/shadowsocks/ShadowsocksVpnService.scala b/src/main/scala/com/github/shadowsocks/ShadowsocksVpnService.scala
index c44750bb..6770929d 100644
--- a/src/main/scala/com/github/shadowsocks/ShadowsocksVpnService.scala
+++ b/src/main/scala/com/github/shadowsocks/ShadowsocksVpnService.scala
@@ -63,7 +63,7 @@ class ShadowsocksVpnService extends VpnService with BaseService {
 
   private lazy val application = getApplication.asInstanceOf[ShadowsocksApplication]
   val TAG = "ShadowsocksVpnService"
-  val VPN_MTU = 1500
+  val VPN_MTU = 1400
   val PRIVATE_VLAN = "26.26.26.%s"
   var conn: ParcelFileDescriptor = null
   var notificationManager: NotificationManager = null