diff --git a/TMessagesProj/build.gradle b/TMessagesProj/build.gradle
index 3922d8d13..4ab052f38 100644
--- a/TMessagesProj/build.gradle
+++ b/TMessagesProj/build.gradle
@@ -72,7 +72,7 @@ android {
         coreLibraryDesugaringEnabled true
     }
 
-    defaultConfig.versionCode = 2759
+    defaultConfig.versionCode = Integer.parseInt(APP_VERSION_CODE)
 
     defaultConfig {
         minSdkVersion 16
diff --git a/TMessagesProj/jni/tgnet/ApiScheme.cpp b/TMessagesProj/jni/tgnet/ApiScheme.cpp
index d055a4df3..994a4aebc 100644
--- a/TMessagesProj/jni/tgnet/ApiScheme.cpp
+++ b/TMessagesProj/jni/tgnet/ApiScheme.cpp
@@ -241,12 +241,9 @@ void TL_config::readParams(NativeByteBuffer *stream, int32_t instanceNum, bool &
     if ((flags & 4) != 0) {
         base_lang_pack_version = stream->readInt32(&error);
     }
-    if ((flags & 4) != 0) {
-        base_lang_pack_version = stream->readInt32(&error);
+    if ((flags & 32768) != 0) {
+        reactions_default = std::unique_ptr<Reaction>(Reaction::TLdeserialize(stream, stream->readUint32(&error), instanceNum, error));
     }
-//    if ((flags & 32768) != 0) {
-//        reactions_default = std::unique_ptr<Reaction>(Reaction::TLdeserialize(stream, stream->readUint32(&error), instanceNum, error));
-//    }
 }
 
 void TL_config::serializeToStream(NativeByteBuffer *stream) {
diff --git a/TMessagesProj/src/main/java/org/telegram/messenger/AndroidUtilities.java b/TMessagesProj/src/main/java/org/telegram/messenger/AndroidUtilities.java
index 0ed72db7b..f6f9d1114 100644
--- a/TMessagesProj/src/main/java/org/telegram/messenger/AndroidUtilities.java
+++ b/TMessagesProj/src/main/java/org/telegram/messenger/AndroidUtilities.java
@@ -114,9 +114,6 @@ import com.android.internal.telephony.ITelephony;
 import com.google.android.gms.auth.api.phone.SmsRetriever;
 import com.google.android.gms.auth.api.phone.SmsRetrieverClient;
 import com.google.android.gms.tasks.Task;
-import com.microsoft.appcenter.AppCenter;
-import com.microsoft.appcenter.crashes.Crashes;
-import com.microsoft.appcenter.distribute.Distribute;
 
 import org.telegram.PhoneFormat.PhoneFormat;
 import org.telegram.messenger.browser.Browser;
diff --git a/TMessagesProj/src/main/java/org/telegram/messenger/BuildVars.java b/TMessagesProj/src/main/java/org/telegram/messenger/BuildVars.java
index ca1df2fcd..5286dab0b 100644
--- a/TMessagesProj/src/main/java/org/telegram/messenger/BuildVars.java
+++ b/TMessagesProj/src/main/java/org/telegram/messenger/BuildVars.java
@@ -24,10 +24,11 @@ public class BuildVars {
     public static boolean USE_CLOUD_STRINGS = true;
     public static boolean CHECK_UPDATES = true;
     public static boolean NO_SCOPED_STORAGE = Build.VERSION.SDK_INT <= 29;
-    public static int BUILD_VERSION = 2799;
-    public static String BUILD_VERSION_STRING = "9.0.0";
+    public static int BUILD_VERSION = 2800;
+    public static String BUILD_VERSION_STRING = "9.0.1";
     public static int APP_ID = 4;
     public static String APP_HASH = "014b35b6184100b085b0d0572f9b5103";
+    public static String APPCENTER_HASH = "f9726602-67c9-48d2-b5d0-4761f1c1a8f3";
 
     public static String SMS_HASH = isStandaloneApp() ? "w0lkcmTZkKh" : (DEBUG_VERSION ? "O2P2z+/jBpJ" : "oLeq9AcOZkT");
     public static String PLAYSTORE_APP_URL = "https://play.google.com/store/apps/details?id=org.telegram.messenger";
diff --git a/TMessagesProj/src/main/java/org/telegram/messenger/MediaDataController.java b/TMessagesProj/src/main/java/org/telegram/messenger/MediaDataController.java
index 54a3422ff..0b5a4b9a3 100644
--- a/TMessagesProj/src/main/java/org/telegram/messenger/MediaDataController.java
+++ b/TMessagesProj/src/main/java/org/telegram/messenger/MediaDataController.java
@@ -2508,6 +2508,9 @@ public class MediaDataController extends BaseController {
     private static long calcStickersHash(ArrayList<TLRPC.TL_messages_stickerSet> sets) {
         long acc = 0;
         for (int a = 0; a < sets.size(); a++) {
+            if (sets.get(a) == null) {
+                continue;
+            }
             TLRPC.StickerSet set = sets.get(a).set;
             if (set.archived) {
                 continue;
diff --git a/TMessagesProj/src/main/java/org/telegram/tgnet/TLRPC.java b/TMessagesProj/src/main/java/org/telegram/tgnet/TLRPC.java
index 4780e1ac0..ebfc5896e 100644
--- a/TMessagesProj/src/main/java/org/telegram/tgnet/TLRPC.java
+++ b/TMessagesProj/src/main/java/org/telegram/tgnet/TLRPC.java
@@ -35149,9 +35149,9 @@ public class TLRPC {
             if ((flags & 4) != 0) {
                 base_lang_pack_version = stream.readInt32(exception);
             }
-//            if ((flags & 32768) != 0) {
-//                reactions_default = Reaction.TLdeserialize(stream, stream.readInt32(exception), exception);
-//            }
+            if ((flags & 32768) != 0) {
+                reactions_default = Reaction.TLdeserialize(stream, stream.readInt32(exception), exception);
+            }
         }
 
         public void serializeToStream(AbstractSerializedData stream) {
@@ -35232,9 +35232,9 @@ public class TLRPC {
             if ((flags & 4) != 0) {
                 stream.writeInt32(base_lang_pack_version);
             }
-//            if ((flags & 32768) != 0) {
-//                reactions_default.serializeToStream(stream);
-//            }
+            if ((flags & 32768) != 0) {
+                reactions_default.serializeToStream(stream);
+            }
         }
     }
 
diff --git a/gradle.properties b/gradle.properties
index a69122df0..665539055 100644
--- a/gradle.properties
+++ b/gradle.properties
@@ -13,8 +13,8 @@
 # http://www.gradle.org/docs/current/userguide/multi_project_builds.html#sec:decoupled_projects
 # org.gradle.parallel=true
 #Sat Mar 12 05:53:50 MSK 2016
-APP_VERSION_NAME=8.9.2
-APP_VERSION_CODE=2756
+APP_VERSION_NAME=9.0.1
+APP_VERSION_CODE=2800
 APP_PACKAGE=org.telegram.messenger
 RELEASE_KEY_PASSWORD=TelegramAndroidPswd
 RELEASE_KEY_ALIAS=tmessages