diff --git a/lib/config/app_config.dart b/lib/config/app_config.dart
index c0c468d..3711100 100644
--- a/lib/config/app_config.dart
+++ b/lib/config/app_config.dart
@@ -17,14 +17,13 @@ class AppConfig {
     return _environmentHosts[currentEnvironment] ?? const [];
   }
 
-  static String homeUrl({String? appName, String? appLogo}) {
+  static String homeUrl({String? appName}) {
     final host = environmentHosts.isNotEmpty
         ? environmentHosts.first
         : 'h5-im.imharry.work';
     return _withShellBranding(
       _normalizeHomeUrl(host),
       appName: appName,
-      appLogo: appLogo,
     );
   }
 
@@ -39,7 +38,6 @@ class AppConfig {
   static String _withShellBranding(
     String url, {
     String? appName,
-    String? appLogo,
   }) {
     final uri = Uri.parse(url);
     final queryParameters = Map<String, String>.from(uri.queryParameters)
@@ -50,21 +48,6 @@ class AppConfig {
       queryParameters['shell_app_name'] = trimmedName;
     }
 
-    final fragmentParameters = Map<String, String>.from(
-      Uri.splitQueryString(uri.fragment),
-    );
-    final trimmedLogo = (appLogo ?? AppConfig.appLogo).trim();
-    if (trimmedLogo.isNotEmpty) {
-      fragmentParameters['shell_app_logo'] = trimmedLogo;
-    }
-
-    return uri
-        .replace(
-          queryParameters: queryParameters,
-          fragment: fragmentParameters.isEmpty
-              ? null
-              : Uri(queryParameters: fragmentParameters).query,
-        )
-        .toString();
+    return uri.replace(queryParameters: queryParameters).toString();
   }
 }
diff --git a/lib/main.dart b/lib/main.dart
index be1eff1..066017b 100644
--- a/lib/main.dart
+++ b/lib/main.dart
@@ -1,4 +1,5 @@
 import 'dart:async';
+import 'dart:convert';
 
 import 'package:flutter/material.dart';
 import 'package:flutter/services.dart';
@@ -124,7 +125,6 @@ class _H5ShellPageState extends State<H5ShellPage> with WidgetsBindingObserver {
     WidgetsBinding.instance.addObserver(this);
     _homeUrl = AppConfig.homeUrl(
       appName: widget.shellBranding.appName,
-      appLogo: widget.shellBranding.appLogo,
     );
     _controller = _buildController()..loadRequest(Uri.parse(_homeUrl));
   }
@@ -187,6 +187,7 @@ class _H5ShellPageState extends State<H5ShellPage> with WidgetsBindingObserver {
             }
           },
           onPageFinished: (_) {
+            unawaited(_syncShellBranding());
             if (mounted) {
               setState(() {
                 _progress = 100;
@@ -253,6 +254,23 @@ class _H5ShellPageState extends State<H5ShellPage> with WidgetsBindingObserver {
     }
   }
 
+  Future<void> _syncShellBranding() {
+    final payload = jsonEncode({
+      'name': widget.shellBranding.appName,
+      'logo': widget.shellBranding.appLogo,
+    });
+    final script = '''
+(() => {
+  try {
+    const brand = $payload;
+    window.sessionStorage.setItem('OPENIM_FLUTTER_SHELL_BRAND', JSON.stringify(brand));
+    window.dispatchEvent(new CustomEvent('openim-shell-branding-updated', { detail: brand }));
+  } catch (_) {}
+})();
+''';
+    return _runJavaScriptSafely(script);
+  }
+
   Future<void> _stopWebMedia() {
     return _runJavaScriptSafely(_stopWebMediaScript);
   }