diff --git a/android/app/src/main/AndroidManifest.xml b/android/app/src/main/AndroidManifest.xml
index 6ed9014..1061e9e 100644
--- a/android/app/src/main/AndroidManifest.xml
+++ b/android/app/src/main/AndroidManifest.xml
@@ -23,7 +23,8 @@
             android:theme="@style/LaunchTheme"
             android:configChanges="orientation|keyboardHidden|keyboard|screenSize|smallestScreenSize|locale|layoutDirection|fontScale|screenLayout|density|uiMode"
             android:hardwareAccelerated="true"
-            android:windowSoftInputMode="adjustResize">
+            android:windowSoftInputMode="adjustResize"
+            android:exported="true">
             <!-- Specifies an Android theme to apply to this Activity as soon as
                  the Android process has started. This theme is visible to the user
                  while the Flutter UI initializes. After that, this theme continues
diff --git a/ios/Runner.xcodeproj/project.pbxproj b/ios/Runner.xcodeproj/project.pbxproj
index 4297642..f5b3c15 100644
--- a/ios/Runner.xcodeproj/project.pbxproj
+++ b/ios/Runner.xcodeproj/project.pbxproj
@@ -492,4 +492,4 @@
 /* End XCConfigurationList section */
 	};
 	rootObject = 97C146E61CF9000F007C117D /* Project object */;
-}
\ No newline at end of file
+}
diff --git a/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-50x50@1x.png b/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-50x50@1x.png
new file mode 100644
index 0000000..ae24ab9
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diff --git a/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-50x50@2x.png b/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-50x50@2x.png
new file mode 100644
index 0000000..3212359
Binary files /dev/null and b/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-50x50@2x.png differ
diff --git a/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-57x57@1x.png b/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-57x57@1x.png
new file mode 100644
index 0000000..529052a
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diff --git a/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-57x57@2x.png b/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-57x57@2x.png
new file mode 100644
index 0000000..18aa346
Binary files /dev/null and b/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-57x57@2x.png differ
diff --git a/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-72x72@1x.png b/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-72x72@1x.png
new file mode 100644
index 0000000..797a997
Binary files /dev/null and b/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-72x72@1x.png differ
diff --git a/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-72x72@2x.png b/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-72x72@2x.png
new file mode 100644
index 0000000..44f196d
Binary files /dev/null and b/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-72x72@2x.png differ
diff --git a/lib/screens/history.dart b/lib/screens/history.dart
index 88f133c..a3527bc 100644
--- a/lib/screens/history.dart
+++ b/lib/screens/history.dart
@@ -33,7 +33,7 @@ class HistoryScreen extends StatelessWidget with ChangeNotifier {
     CesiumPlusProvider _cesiumPlusProvider =
         Provider.of<CesiumPlusProvider>(context, listen: false);
     log.i('Build pubkey : ' + pubkey!);
-    WidgetsBinding.instance!.addPostFrameCallback((_) {});
+    WidgetsBinding.instance?.addPostFrameCallback((_) {});
 
     _historyProvider.balance = _historyProvider.transBC = null;
 
diff --git a/lib/screens/home.dart b/lib/screens/home.dart
index 4ca2a72..e089aea 100644
--- a/lib/screens/home.dart
+++ b/lib/screens/home.dart
@@ -69,6 +69,20 @@ class HomeScreen extends StatelessWidget {
                   );
                 },
               ),
+              ListTile(
+                key: const Key('substrateSandbox'),
+                title: const Text('SUBSTRATE SANDBOX'),
+                onTap: () {
+                  Navigator.pop(context);
+                  Navigator.push(
+                    context,
+                    MaterialPageRoute(builder: (context) {
+                      return const SubstrateSandBox();
+                    }),
+                  );
+                },
+              ),
+
               // ListTile(
               //   title: const Text('A propos'),
               //   onTap: () {
@@ -86,9 +100,11 @@ class HomeScreen extends StatelessWidget {
       body: Builder(
         builder: (ctx) => StatefulWrapper(
             onInit: () {
-              WidgetsBinding.instance!.addPostFrameCallback((_) async {
+              WidgetsBinding.instance?.addPostFrameCallback((_) async {
                 if (!_sub.sdkReady && !_sub.sdkLoading) await _sub.initApi();
-                if (_sub.sdkReady && !_sub.nodeConnected) await _sub.connectNode();
+                if (_sub.sdkReady && !_sub.nodeConnected) {
+                  await _sub.connectNode();
+                }
                 if (isWalletsExists) homeClass.snackNode(ctx);
               });
             },
@@ -186,24 +202,6 @@ Widget geckHome(context) {
             ]),
       ),
       const SizedBox(height: 15),
-      Row(mainAxisAlignment: MainAxisAlignment.center, children: <Widget>[
-        ElevatedButton(
-          style: ElevatedButton.styleFrom(
-            primary: yellowC, // background
-            onPrimary: Colors.black, // foreground
-          ),
-          onPressed: () => Navigator.push(
-            context,
-            MaterialPageRoute(builder: (context) {
-              return const SubstrateSandBox();
-            }),
-          ),
-          child: const Text(
-            'SUBSTRATE SANDBOX',
-            style: TextStyle(fontSize: 20),
-          ),
-        ),
-      ]),
       Expanded(
         flex: 1,
         child: Container(
diff --git a/lib/screens/myWallets/wallet_options.dart b/lib/screens/myWallets/wallet_options.dart
index 7799d99..2bef107 100644
--- a/lib/screens/myWallets/wallet_options.dart
+++ b/lib/screens/myWallets/wallet_options.dart
@@ -422,7 +422,7 @@ class WalletOptions extends StatelessWidget {
       onTap: !walletProvider.isDefaultWallet
           ? () async {
               await walletProvider.deleteWallet(context, wallet);
-              WidgetsBinding.instance!.addPostFrameCallback((_) {
+              WidgetsBinding.instance?.addPostFrameCallback((_) {
                 _myWalletProvider.listWallets =
                     _myWalletProvider.readAllWallets(_currentChest);
                 _myWalletProvider.rebuildWidget();
diff --git a/pubspec.lock b/pubspec.lock
index 336a827..296b2dd 100644
--- a/pubspec.lock
+++ b/pubspec.lock
@@ -368,13 +368,6 @@ packages:
       url: "https://pub.dartlang.org"
     source: hosted
     version: "5.3.2"
-  flutter_launcher_icons:
-    dependency: "direct main"
-    description:
-      name: flutter_launcher_icons
-      url: "https://pub.dartlang.org"
-    source: hosted
-    version: "0.9.2"
   flutter_lints:
     dependency: "direct main"
     description:
@@ -572,6 +565,13 @@ packages:
       url: "https://pub.dartlang.org"
     source: hosted
     version: "1.0.0"
+  icons_launcher:
+    dependency: "direct dev"
+    description:
+      name: icons_launcher
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "1.1.3"
   image:
     dependency: transitive
     description:
@@ -779,14 +779,14 @@ packages:
       name: package_info_plus
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.4.0"
+    version: "1.4.2"
   package_info_plus_linux:
     dependency: transitive
     description:
       name: package_info_plus_linux
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.0.3"
+    version: "1.0.5"
   package_info_plus_macos:
     dependency: transitive
     description:
@@ -807,14 +807,14 @@ packages:
       name: package_info_plus_web
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.0.4"
+    version: "1.0.5"
   package_info_plus_windows:
     dependency: transitive
     description:
       name: package_info_plus_windows
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.0.4"
+    version: "1.0.5"
   path:
     dependency: transitive
     description:
@@ -1295,6 +1295,13 @@ packages:
       url: "https://pub.dartlang.org"
     source: hosted
     version: "1.3.0"
+  universal_io:
+    dependency: transitive
+    description:
+      name: universal_io
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "2.0.4"
   unorm_dart:
     dependency: "direct main"
     description:
diff --git a/pubspec.yaml b/pubspec.yaml
index afc1b57..07bfa99 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -25,7 +25,6 @@ dependencies:
   confirm_dialog: ^1.0.0
   crypto: ^3.0.1
   fast_base58: ^0.2.0
-  flutter_launcher_icons: ^0.9.2
   flutter_lints: ^1.0.4
   flutter_logs: ^2.1.4
   flutter_svg: ^0.22.0
@@ -71,7 +70,7 @@ dependencies:
   dio: ^4.0.4
   desktop_window: ^0.4.0
   durt: ^0.1.6
-  package_info_plus: ^1.3.0
+  package_info_plus: ^1.4.2
   polkawallet_sdk: #^0.4.1 ## Wait for merging PR: https://github.com/polkawallet-io/sdk/pull/19
     # path: ../substrate-sdk
     git:
@@ -79,13 +78,13 @@ dependencies:
       ref: fixAndroidActivityVersion
 
 flutter_icons:
-  android: "ic_launcher"
+  android: true
   ios: true
   image_path: "assets/icon/gecko_flat.png"
-  cupertino_icons: ^1.0.0
   remove_alpha_ios: true
 
 dev_dependencies:
+  icons_launcher: ^1.1.3
   build_runner: ^2.1.2
   flutter_test:
     sdk: flutter