diff --git a/brouter-routing-app/src/main/AndroidManifest.xml b/brouter-routing-app/src/main/AndroidManifest.xml
index 01dd8db..dc4a3fd 100644
--- a/brouter-routing-app/src/main/AndroidManifest.xml
+++ b/brouter-routing-app/src/main/AndroidManifest.xml
@@ -17,6 +17,7 @@
         android:icon="@mipmap/ic_launcher"
         android:label="@string/app_name"
         android:preserveLegacyExternalStorage="true"
+        android:hasFragileUserData="true"
         android:roundIcon="@mipmap/ic_launcher_round"
         android:theme="@style/Theme.App">
         <activity
diff --git a/brouter-routing-app/src/main/java/btools/routingapp/BInstallerActivity.java b/brouter-routing-app/src/main/java/btools/routingapp/BInstallerActivity.java
index 6a70259..e1848d8 100644
--- a/brouter-routing-app/src/main/java/btools/routingapp/BInstallerActivity.java
+++ b/brouter-routing-app/src/main/java/btools/routingapp/BInstallerActivity.java
@@ -162,8 +162,10 @@ public class BInstallerActivity extends AppCompatActivity {
 
   private void updateDownloadButton() {
     final ArrayList<Integer> selectedTilesDownload = mBInstallerView.getSelectedTiles(MASK_SELECTED_RD5);
+    final ArrayList<Integer> selectedTilesLastUpdate = mBInstallerView.getSelectedTiles(MASK_CURRENT_RD5);
     final ArrayList<Integer> selectedTilesUpdate = mBInstallerView.getSelectedTiles(MASK_INSTALLED_RD5);
     final ArrayList<Integer> selectedTilesDelete = mBInstallerView.getSelectedTiles(MASK_DELETED_RD5);
+    selectedTilesUpdate.removeAll(selectedTilesLastUpdate);
     mSummaryInfo.setText("");
 
     if (selectedTilesDelete.size() > 0) {
diff --git a/brouter-routing-app/src/main/java/btools/routingapp/BRouterView.java b/brouter-routing-app/src/main/java/btools/routingapp/BRouterView.java
index f243039..7e31474 100644
--- a/brouter-routing-app/src/main/java/btools/routingapp/BRouterView.java
+++ b/brouter-routing-app/src/main/java/btools/routingapp/BRouterView.java
@@ -9,7 +9,6 @@ import android.graphics.Bitmap;
 import android.graphics.Canvas;
 import android.graphics.Color;
 import android.graphics.Paint;
-import android.graphics.Rect;
 import android.util.Log;
 import android.view.View;
 import android.widget.Toast;
@@ -258,6 +257,8 @@ public class BRouterView extends View {
       ConfigMigration.tryMigrateStorageConfig(
         new File(basedir + "/brouter/segments3/storageconfig.txt"),
         new File(basedir + "/brouter/segments4/storageconfig.txt"));
+    } else {
+      ServerConfig.checkForUpdate(getContext(), segmentDir, "segments4.zip");
     }
     profileDir = new File(basedir, "brouter/profiles2");
     assertDirectoryExists("profile directory", profileDir, "profiles2.zip", version);
@@ -582,6 +583,7 @@ public class BRouterView extends View {
 
       }
     }
+
     if (!path.exists() || !path.isDirectory())
       throw new IllegalArgumentException(message + ": " + path + " cannot be created");
     return false;