diff --git a/src/ST.Client.Desktop/Models/MyAuthenticator.cs b/src/ST.Client.Desktop/Models/MyAuthenticator.cs
index ff6bf795a..bd3f9f653 100644
--- a/src/ST.Client.Desktop/Models/MyAuthenticator.cs
+++ b/src/ST.Client.Desktop/Models/MyAuthenticator.cs
@@ -431,32 +431,7 @@ namespace System.Application.Models
         }
 #endif
 
-        public async Task<Stream?> GetQrCodeStream()
-        {
-            var qrCode = await Task.Run(() =>
-            {
-                var bytes = Serializable.SMP(new[] { this.AuthenticatorData.ToLightweightExportDTO() });
-#if DEBUG
-                var bytes_compress_gzip = bytes.CompressByteArray();
-#endif
-                var bytes_compress_br = bytes.CompressByteArrayByBrotli();
-#if DEBUG
-                Toast.Show($"bytesLength, source: {bytes.Length}, gzip: {bytes_compress_gzip.Length}, br: {bytes_compress_br.Length}");
-#endif
-                (var result, var stream, var e) = QRCodeHelper.Create(bytes);
-                switch (result)
-                {
-                    case QRCodeHelper.QRCodeCreateResult.DataTooLong:
-                        Toast.Show(AppResources.AuthLocal_ExportToQRCodeTooLongErrorTip);
-                        break;
-                    case QRCodeHelper.QRCodeCreateResult.Exception:
-                        Toast.Show(e!.ToString());
-                        break;
-                }
-                return stream;
-            });
-            return qrCode;
-        }
+        public Task<Stream?> GetQrCodeStream() => AuthService.GetQrCodeStreamAsync(AuthenticatorData);
 
         /// <summary>
         /// 编辑令牌自定义名称
diff --git a/src/ST.Client.Desktop/Models/Settings2/GeneralSettings.cs b/src/ST.Client.Desktop/Models/Settings2/GeneralSettings.cs
index 8e009194c..74517fac0 100644
--- a/src/ST.Client.Desktop/Models/Settings2/GeneralSettings.cs
+++ b/src/ST.Client.Desktop/Models/Settings2/GeneralSettings.cs
@@ -74,5 +74,11 @@ namespace System.Application.Models.Settings
         /// </summary>
         public static SerializableProperty<IReadOnlyDictionary<Platform, string>> TextReaderProvider { get; }
             = GetProperty(defaultValue: (IReadOnlyDictionary<Platform, string>?)null, autoSave: true);
+
+        /// <summary>
+        /// 下载更新渠道
+        /// </summary>
+        public static SerializableProperty<UpdateChannelType> UpdateChannel { get; }
+            = GetProperty(defaultValue: (UpdateChannelType)default, autoSave: true);
     }
 }
\ No newline at end of file
diff --git a/src/ST.Client.Desktop/Models/Settings2/UISettings.cs b/src/ST.Client.Desktop/Models/Settings2/UISettings.cs
index 927c0a046..9b2951edd 100644
--- a/src/ST.Client.Desktop/Models/Settings2/UISettings.cs
+++ b/src/ST.Client.Desktop/Models/Settings2/UISettings.cs
@@ -13,13 +13,18 @@ namespace System.Application.Models.Settings
         static UISettings()
         {
             //Theme.ValueChanged += Theme_ValueChanged;
+#if !__MOBILE__
             AppGridSize.ValueChanged += AppGridSize_ValueChanged;
+#endif
         }
 
+
+#if !__MOBILE__
         private static void AppGridSize_ValueChanged(object? sender, ValueChangedEventArgs<int> e)
         {
             SteamConnectService.Current.SteamApps.Refresh();
         }
+#endif
 
         //private static void Theme_ValueChanged(object sender, ValueChangedEventArgs<short> e)
         //{
diff --git a/src/ST.Client.Desktop/Services/Mvvm/AuthService.cs b/src/ST.Client.Desktop/Services/Mvvm/AuthService.cs
index 8c09e41ef..2d2e32199 100644
--- a/src/ST.Client.Desktop/Services/Mvvm/AuthService.cs
+++ b/src/ST.Client.Desktop/Services/Mvvm/AuthService.cs
@@ -3,6 +3,7 @@ using Newtonsoft.Json.Linq;
 using ReactiveUI;
 using System.Application.Entities;
 using System.Application.Models;
+using System.Application.UI;
 using System.Application.UI.Resx;
 using System.Application.UI.ViewModels;
 using System.Collections.Generic;
@@ -729,5 +730,39 @@ namespace System.Application.Services
                 Toast.Show(ex.Message);
             }
         }
+
+        public static async Task<Stream?> GetQrCodeStreamAsync(IEnumerable<IGAPAuthenticatorDTO> datas)
+        {
+            var qrCode = await Task.Run(() =>
+            {
+                var dtos = datas.Select(x => x.ToLightweightExportDTO()).ToArray();
+                var bytes = Serializable.SMP(dtos);
+#if DEBUG
+                var bytes_compress_gzip = bytes.CompressByteArray();
+#endif
+                var bytes_compress_br = bytes.CompressByteArrayByBrotli();
+#if DEBUG
+                Toast.Show($"bytesLength, source: {bytes.Length}, gzip: {bytes_compress_gzip.Length}, br: {bytes_compress_br.Length}");
+#endif
+                (var result, var stream, var e) = QRCodeHelper.Create(bytes);
+                switch (result)
+                {
+                    case QRCodeHelper.QRCodeCreateResult.DataTooLong:
+                        Toast.Show(AppResources.AuthLocal_ExportToQRCodeTooLongErrorTip);
+                        break;
+                    case QRCodeHelper.QRCodeCreateResult.Exception:
+                        Toast.Show(e!.ToString());
+                        break;
+                }
+                return stream;
+            });
+            return qrCode;
+        }
+
+        public static Task<Stream?> GetQrCodeStreamAsync(params IGAPAuthenticatorDTO[] datas)
+        {
+            IEnumerable<IGAPAuthenticatorDTO> datas_ = datas;
+            return GetQrCodeStreamAsync(datas_);
+        }
     }
 }
\ No newline at end of file
diff --git a/src/ST.Client.Desktop/UI/ViewModels/Pages/DebugPageViewModel.cs b/src/ST.Client.Desktop/UI/ViewModels/Pages/DebugPageViewModel.cs
index 10e3a0256..3b19131f2 100644
--- a/src/ST.Client.Desktop/UI/ViewModels/Pages/DebugPageViewModel.cs
+++ b/src/ST.Client.Desktop/UI/ViewModels/Pages/DebugPageViewModel.cs
@@ -42,8 +42,19 @@ namespace System.Application.UI.ViewModels
         {
         }
 
+        //async void TestHttp()
+        //{
+        //    var task1 = IHttpService.Instance.GetAsync<string>("https://developers.google.com/android");
+        //    var task2 = IHttpService.Instance.GetAsync<string>("https://developer.android.google.cn/");
+        //    var str = await Task.WhenAny(task1, task2);
+        //    DebugString = str.Result ?? string.Empty;
+        //}
+
         public void DebugButton_Click()
         {
+            //TestHttp();
+            //return;
+
             TestTextBoxWindow(0);
 
             //DebugButton_Click1();
diff --git a/src/ST.Client.Desktop/UI/ViewModels/Windows/LocalAuthPage/ExportAuthWindowViewModel.shared.cs b/src/ST.Client.Desktop/UI/ViewModels/Windows/LocalAuthPage/ExportAuthWindowViewModel.shared.cs
index cf21c0253..1de461faa 100644
--- a/src/ST.Client.Desktop/UI/ViewModels/Windows/LocalAuthPage/ExportAuthWindowViewModel.shared.cs
+++ b/src/ST.Client.Desktop/UI/ViewModels/Windows/LocalAuthPage/ExportAuthWindowViewModel.shared.cs
@@ -8,7 +8,6 @@ using System.Linq;
 using System.Properties;
 using System.Threading.Tasks;
 using static System.Application.FilePicker2;
-using WinAuth;
 
 namespace System.Application.UI.ViewModels
 {
@@ -222,20 +221,7 @@ namespace System.Application.UI.ViewModels
         static async Task<Stream?> GetQRCodeAsync(Func<MyAuthenticator, bool>? filter)
         {
             var datas = AuthService.Current.GetExportSourceAuthenticators(filter);
-            var qrCode = await Task.Run(() =>
-             {
-                 var dtos = datas.Select(x => x.ToLightweightExportDTO()).ToArray();
-                 var bytes = Serializable.SMP(dtos);
-#if DEBUG
-                var bytes_compress_gzip = bytes.CompressByteArray();
-#endif
-                 var bytes_compress_br = bytes.CompressByteArrayByBrotli();
-#if DEBUG
-                Toast.Show($"bytesLength, source: {bytes.Length}, gzip: {bytes_compress_gzip.Length}, br: {bytes_compress_br.Length}");
-#endif
-                 return CreateQRCode(bytes_compress_br);
-             });
-            return qrCode;
+            return await AuthService.GetQrCodeStreamAsync(datas);
         }
 
         /// <summary>
@@ -258,21 +244,6 @@ namespace System.Application.UI.ViewModels
 
         async Task ExportAuthToQRCodeAsync() => await ExportAuthCore(async () => QRCode = await GetQRCodeAsync(Filter), ignorePath: true, ignorePassword: true);
 
-        static Stream? CreateQRCode(byte[] bytes)
-        {
-            (var result, var stream, var e) = QRCodeHelper.Create(bytes);
-            switch (result)
-            {
-                case QRCodeHelper.QRCodeCreateResult.DataTooLong:
-                    Toast.Show(AppResources.AuthLocal_ExportToQRCodeTooLongErrorTip);
-                    break;
-                case QRCodeHelper.QRCodeCreateResult.Exception:
-                    Toast.Show(e!.ToString());
-                    break;
-            }
-            return stream;
-        }
-
         /// <summary>
         /// 默认导出文件名
         /// </summary>
diff --git a/src/ST.Client/UpdateChannelType.cs b/src/ST.Client/UpdateChannelType.cs
new file mode 100644
index 000000000..ed2c01119
--- /dev/null
+++ b/src/ST.Client/UpdateChannelType.cs
@@ -0,0 +1,17 @@
+namespace System.Application
+{
+    /// <summary>
+    /// 下载更新渠道类型
+    /// </summary>
+    public enum UpdateChannelType
+    {
+        /// <summary>
+        /// 自动识别
+        /// </summary>
+        Auto,
+
+        GitHub,
+
+        Gitee,
+    }
+}
\ No newline at end of file