diff --git a/app/src/main/java/ru/vtosters/lite/hooks/MainActivityInjector.java b/app/src/main/java/ru/vtosters/lite/hooks/MainActivityInjector.java
index 4423cfdae..699919834 100644
--- a/app/src/main/java/ru/vtosters/lite/hooks/MainActivityInjector.java
+++ b/app/src/main/java/ru/vtosters/lite/hooks/MainActivityInjector.java
@@ -8,7 +8,6 @@ import com.vk.core.dialogs.alert.VkAlertDialog;
 import com.vtosters.lite.R;
 import ru.vtosters.lite.concurrent.VTExecutors;
 import ru.vtosters.lite.downloaders.notifications.NotificationChannels;
-import ru.vtosters.lite.hooks.ui.SystemThemeChangerHook;
 import ru.vtosters.lite.ssfs.UsersList;
 import ru.vtosters.lite.themes.ThemesManager;
 import ru.vtosters.lite.ui.dialogs.DisableBattery;
@@ -39,7 +38,8 @@ public class MainActivityInjector {
             NotificationChannels.createChannels();
         }
 
-        if (AndroidUtils.isInstallFromUpdate(activity) && !ThemesUtils.isMonetTheme() && ThemesManager.canApplyCustomAccent()) {
+        if (Preferences.isNewBuild() && !ThemesUtils.isMonetTheme() && ThemesManager.canApplyCustomAccent()) {
+            Preferences.updateBuildNumber();
             updateBinsAndTmpArchive(activity);
         }
 
diff --git a/app/src/main/java/ru/vtosters/lite/themes/ThemesManager.java b/app/src/main/java/ru/vtosters/lite/themes/ThemesManager.java
index 9eae929ed..888408864 100644
--- a/app/src/main/java/ru/vtosters/lite/themes/ThemesManager.java
+++ b/app/src/main/java/ru/vtosters/lite/themes/ThemesManager.java
@@ -120,7 +120,7 @@ public class ThemesManager {
             initPaths(app);
             validateModApk();
 
-            if (!AndroidUtils.isInstallFromUpdate(app) && !ThemesUtils.isMonetTheme() && canApplyCustomAccent()) {
+            if (!Preferences.isNewBuild() && !ThemesUtils.isMonetTheme() && canApplyCustomAccent()) {
                 ResourcesLoader.init(app);
                 ResourcesLoader.load(app, modApk.getAbsolutePath(), false);
             }
diff --git a/app/src/main/java/ru/vtosters/lite/ui/dialogs/Start.java b/app/src/main/java/ru/vtosters/lite/ui/dialogs/Start.java
index b60848dc0..eca713aa9 100644
--- a/app/src/main/java/ru/vtosters/lite/ui/dialogs/Start.java
+++ b/app/src/main/java/ru/vtosters/lite/ui/dialogs/Start.java
@@ -17,7 +17,7 @@ public class Start {
         if (Build.VERSION.SDK_INT >= 23) {
             activity.requestPermissions(new String[]{"android.permission.WRITE_EXTERNAL_STORAGE"}, 228);
         }
-        if (getBoolValue("showAlert", true))
+        if (getBoolValue("showAlert", true) && AndroidUtils.isFirstInstall(activity))
             new VkAlertDialog.Builder(activity)
                     .setTitle(R.string.warning)
                     .setMessage(getWelcome())
diff --git a/app/src/main/java/ru/vtosters/lite/utils/AndroidUtils.java b/app/src/main/java/ru/vtosters/lite/utils/AndroidUtils.java
index e66516c7c..c0cbb70b6 100644
--- a/app/src/main/java/ru/vtosters/lite/utils/AndroidUtils.java
+++ b/app/src/main/java/ru/vtosters/lite/utils/AndroidUtils.java
@@ -201,14 +201,14 @@ public class AndroidUtils {
         return null;
     }
 
-    public static boolean isInstallFromUpdate(Context context) {
+    public static boolean isFirstInstall(Context context) {
         try {
             long firstInstallTime = context.getPackageManager().getPackageInfo(context.getPackageName(), 0).firstInstallTime;
             long lastUpdateTime = context.getPackageManager().getPackageInfo(context.getPackageName(), 0).lastUpdateTime;
-            return firstInstallTime != lastUpdateTime;
+            return firstInstallTime == lastUpdateTime;
         } catch (PackageManager.NameNotFoundException e) {
             e.printStackTrace();
-            return false;
+            return true;
         }
     }
 }
\ No newline at end of file
diff --git a/app/src/main/java/ru/vtosters/lite/utils/Preferences.java b/app/src/main/java/ru/vtosters/lite/utils/Preferences.java
index b29904031..957d16177 100644
--- a/app/src/main/java/ru/vtosters/lite/utils/Preferences.java
+++ b/app/src/main/java/ru/vtosters/lite/utils/Preferences.java
@@ -16,6 +16,7 @@ import java.security.NoSuchAlgorithmException;
 import static java.lang.Long.MAX_VALUE;
 import static ru.vtosters.lite.proxy.ProxyUtils.setProxy;
 import static ru.vtosters.lite.utils.AndroidUtils.getGlobalContext;
+import static ru.vtosters.lite.utils.AndroidUtils.getPackageName;
 import static ru.vtosters.lite.utils.NewsFeedFiltersUtils.setupFilters;
 import static ru.vtosters.lite.utils.SignatureChecker.validateAppSignature;
 import static ru.vtosters.lite.utils.VTVerifications.isPrometheus;
@@ -289,6 +290,24 @@ public class Preferences {
     public static boolean checkupdates() {
         return !getBoolValue("isRoamingState", false) && isValidSignature() && BuildConfig.BUILD_TYPE.equals("release");
     }
+
+    public static boolean isNewBuild() {
+        try {
+            return getPreferences().getLong("setupTime", 0L) != AndroidUtils.getGlobalContext().getPackageManager().getPackageInfo(getPackageName(), 0).lastUpdateTime;
+        } catch (PackageManager.NameNotFoundException e) {
+            e.printStackTrace();
+            return false;
+        }
+    }
+
+    public static void updateBuildNumber() {
+        try {
+            getPreferences().edit().putLong("setupTime", AndroidUtils.getGlobalContext().getPackageManager().getPackageInfo(getPackageName(), 0).lastUpdateTime).apply();
+        } catch (PackageManager.NameNotFoundException e) {
+            e.printStackTrace();
+        }
+    }
+
     public static boolean isValidSignature() {
         try {
             return validateAppSignature();