diff --git a/clashN/clashN/Global.cs b/clashN/clashN/Global.cs
index ae38ec6..7aa1cb1 100644
--- a/clashN/clashN/Global.cs
+++ b/clashN/clashN/Global.cs
@@ -105,7 +105,7 @@ internal class Global
                         ""
                     };
 
-        public static readonly List<string> coreTypes = new List<string> { "Clash", "ClashPremium", "ClashMeta", };
+        public static readonly List<string> coreTypes = new List<string> { "Clash", "ClashPremium", "ClashMeta", "Mihomo" };
 
         public static readonly List<string> allowSelectType = new List<string> { "selector", "urltest", "loadbalance", "fallback" };
 
diff --git a/clashN/clashN/Handler/ConfigProc.cs b/clashN/clashN/Handler/ConfigProc.cs
index c6a7e80..78b87cd 100644
--- a/clashN/clashN/Handler/ConfigProc.cs
+++ b/clashN/clashN/Handler/ConfigProc.cs
@@ -498,7 +498,7 @@ public static int AddProfileCommon(ref Config config, ProfileItem profileItem)
             }
             if (profileItem.coreType is null)
             {
-                profileItem.coreType = CoreKind.ClashMeta;
+                profileItem.coreType = CoreKind.Mihomo;
             }
             if (!config.ProfileItems.Exists(it => it.indexId == profileItem.indexId))
             {
@@ -558,7 +558,7 @@ public static int AddBatchProfiles(ref Config config, string clipboardData, stri
                 {
                     groupId = groupId,
                     url = clipboardData,
-                    coreType = CoreKind.ClashMeta,
+                    coreType = CoreKind.Mihomo,
                     address = string.Empty,
                     enabled = true,
                     remarks = "clash_subscription"
@@ -582,7 +582,7 @@ public static int AddBatchProfiles(ref Config config, string clipboardData, stri
                         {
                             groupId = groupId,
                             url = query["url"] ?? string.Empty,
-                            coreType = CoreKind.ClashMeta,
+                            coreType = CoreKind.Mihomo,
                             address = string.Empty,
                             enabled = true,
                             remarks = "clash_subscription"
@@ -600,7 +600,7 @@ public static int AddBatchProfiles(ref Config config, string clipboardData, stri
                 {
                     groupId = groupId,
                     url = "",
-                    coreType = CoreKind.ClashMeta,
+                    coreType = CoreKind.Mihomo,
                     address = string.Empty,
                     enabled = false,
                     remarks = "clash_local_file"
diff --git a/clashN/clashN/Handler/MainFormHandler.cs b/clashN/clashN/Handler/MainFormHandler.cs
index c8519f0..ccf2455 100644
--- a/clashN/clashN/Handler/MainFormHandler.cs
+++ b/clashN/clashN/Handler/MainFormHandler.cs
@@ -302,12 +302,12 @@ public void InitRegister(Config config)
             });
         }
 
-        public List<ProxiesItem> GetClashProxyGroups()
+        public List<ProxiesItem>? GetClashProxyGroups()
         {
             try
             {
                 var fileContent = LazyConfig.Instance.ProfileContent;
-                if (!fileContent.ContainsKey("proxy-groups"))
+                if (fileContent is null || fileContent?.ContainsKey("proxy-groups") == false)
                 {
                     return null;
                 }
diff --git a/clashN/clashN/Handler/StatisticsHandler.cs b/clashN/clashN/Handler/StatisticsHandler.cs
index 4c99913..c98da78 100644
--- a/clashN/clashN/Handler/StatisticsHandler.cs
+++ b/clashN/clashN/Handler/StatisticsHandler.cs
@@ -106,8 +106,9 @@ public async void Run()
                             if (!string.IsNullOrEmpty(result))
                             {
                                 var serverStatItem = config_.GetProfileItem(config_.IndexId);
+                                
                                 ParseOutput(result, out ulong up, out ulong down);
-                                if (up + down > 0)
+                                if (serverStatItem != null && (up + down) > 0) 
                                 {
                                     serverStatItem.uploadRemote += up;
                                     serverStatItem.downloadRemote += down;
diff --git a/clashN/clashN/Tool/Utils.cs b/clashN/clashN/Tool/Utils.cs
index ac2883f..9f61b6c 100644
--- a/clashN/clashN/Tool/Utils.cs
+++ b/clashN/clashN/Tool/Utils.cs
@@ -86,16 +86,19 @@ public static string LoadResource(string res)
         /// <typeparam name="T"></typeparam>
         /// <param name="strJson"></param>
         /// <returns></returns>
-        public static T FromJson<T>(string strJson)
+        public static T? FromJson<T>(string? strJson)
         {
             try
             {
-                T obj = JsonConvert.DeserializeObject<T>(strJson);
-                return obj;
+                if (string.IsNullOrEmpty(strJson))
+                {
+                    return default;
+                }
+                return JsonConvert.DeserializeObject<T>(strJson);
             }
             catch
             {
-                return JsonConvert.DeserializeObject<T>("");
+                return default;
             }
         }
 
@@ -104,14 +107,25 @@ public static T FromJson<T>(string strJson)
         /// </summary>
         /// <param name="obj"></param>
         /// <returns></returns>
-        public static string ToJson(Object obj)
+        public static string ToJson(object? obj, bool indented = true)
         {
             string result = string.Empty;
             try
             {
-                result = JsonConvert.SerializeObject(obj,
+                if (obj == null)
+                {
+                    return result;
+                }
+                if (indented)
+                {
+                    result = JsonConvert.SerializeObject(obj,
                                            Formatting.Indented,
                                            new JsonSerializerSettings { NullValueHandling = NullValueHandling.Ignore });
+                }
+                else
+                {
+                    result = JsonConvert.SerializeObject(obj, new JsonSerializerSettings { NullValueHandling = NullValueHandling.Ignore });
+                }
             }
             catch (Exception ex)
             {
@@ -895,18 +909,7 @@ public static string GetVersion(bool blFull = true)
         /// <returns></returns>
         public static T DeepCopy<T>(T obj)
         {
-            object retval;
-            using (MemoryStream ms = new MemoryStream())
-            {
-                BinaryFormatter bf = new BinaryFormatter();
-                //序列化成流
-                bf.Serialize(ms, obj);
-                ms.Seek(0, SeekOrigin.Begin);
-                //反序列化成对象
-                retval = bf.Deserialize(ms);
-                ms.Close();
-            }
-            return (T)retval;
+            return FromJson<T>(ToJson(obj, false))!;             
         }
 
         /// <summary>
diff --git a/clashN/clashN/ViewModels/HelpViewModel.cs b/clashN/clashN/ViewModels/HelpViewModel.cs
index 753952b..590f83c 100644
--- a/clashN/clashN/ViewModels/HelpViewModel.cs
+++ b/clashN/clashN/ViewModels/HelpViewModel.cs
@@ -14,9 +14,9 @@ public class HelpViewModel : ReactiveObject
         private NoticeHandler? _noticeHandler;
 
         public ReactiveCommand<Unit, Unit> CheckUpdateCmd { get; }
-        public ReactiveCommand<Unit, Unit> CheckUpdateClashCoreCmd { get; }
+        //public ReactiveCommand<Unit, Unit> CheckUpdateClashCoreCmd { get; }
         public ReactiveCommand<Unit, Unit> CheckUpdateMihomoCoreCmd { get; }
-        public ReactiveCommand<Unit, Unit> CheckUpdateGeoDataCmd { get; }
+        //public ReactiveCommand<Unit, Unit> CheckUpdateGeoDataCmd { get; }
 
         public HelpViewModel()
         {
@@ -27,34 +27,34 @@ public HelpViewModel()
             {
                 CheckUpdateN();
             });
-            CheckUpdateClashCoreCmd = ReactiveCommand.Create(() =>
-            {
-                CheckUpdateCore(CoreKind.Clash);
-            });
+            //CheckUpdateClashCoreCmd = ReactiveCommand.Create(() =>
+            //{
+            //    CheckUpdateCore(CoreKind.Clash);
+            //});
             CheckUpdateMihomoCoreCmd = ReactiveCommand.Create(() =>
             {
                 CheckUpdateCore(CoreKind.Mihomo);
             });
-            CheckUpdateGeoDataCmd = ReactiveCommand.Create(() =>
-            {
-                CheckUpdateGeoData();
-            });
+            //CheckUpdateGeoDataCmd = ReactiveCommand.Create(() =>
+            //{
+            //    CheckUpdateGeoData();
+            //});
         }
         
-        private void CheckUpdateGeoData()
-        {
-            void _updateUI(bool success, string msg)
-            {
-                _noticeHandler?.SendMessage(msg);
-                if (success)
-                {
-                    Locator.Current.GetService<MainWindowViewModel>()?.MyAppExit(false);
-                }
-            };
-            UpdateHandle update = new UpdateHandle();
-            update.UpdateGeoFile(GeoKind.GEO_IP, _config, _updateUI);
-            update.UpdateGeoFile(GeoKind.GEO_SITE, _config, _updateUI);
-        }
+        //private void CheckUpdateGeoData()
+        //{
+        //    void _updateUI(bool success, string msg)
+        //    {
+        //        _noticeHandler?.SendMessage(msg);
+        //        if (success)
+        //        {
+        //            Locator.Current.GetService<MainWindowViewModel>()?.MyAppExit(false);
+        //        }
+        //    };
+        //    UpdateHandle update = new UpdateHandle();
+        //    update.UpdateGeoFile(GeoKind.GEO_IP, _config, _updateUI);
+        //    update.UpdateGeoFile(GeoKind.GEO_SITE, _config, _updateUI);
+        //}
 
         private void CheckUpdateN()
         {
diff --git a/clashN/clashN/ViewModels/ProfilesViewModel.cs b/clashN/clashN/ViewModels/ProfilesViewModel.cs
index 47a939e..9bd44e8 100644
--- a/clashN/clashN/ViewModels/ProfilesViewModel.cs
+++ b/clashN/clashN/ViewModels/ProfilesViewModel.cs
@@ -162,7 +162,7 @@ public void EditProfile(bool blNew)
             {
                 item = new()
                 {
-                    coreType = CoreKind.ClashMeta
+                    coreType = CoreKind.Mihomo
                 };
             }
             else
diff --git a/clashN/clashN/Views/HelpView.xaml b/clashN/clashN/Views/HelpView.xaml
index 924aba1..b38a7c0 100644
--- a/clashN/clashN/Views/HelpView.xaml
+++ b/clashN/clashN/Views/HelpView.xaml
@@ -96,42 +96,6 @@
                     </DockPanel>
                 </materialDesign:Card>
 
-                <materialDesign:Card
-                    Width="300"
-                    Margin="8"
-                    Padding="16"
-                    materialDesign:UniformCornerRadius="8">
-                    <DockPanel>
-                        <Grid>
-                            <Grid.RowDefinitions>
-                                <RowDefinition Height="Auto" />
-                                <RowDefinition Height="Auto" />
-                                <RowDefinition Height="Auto" />
-                            </Grid.RowDefinitions>
-                            <TextBlock
-                                Grid.Row="0"
-                                Margin="16,16,16,4"
-                                Style="{StaticResource TabItemTitle}"
-                                Text="Update Clash Core" />
-
-                            <Separator Grid.Row="1" Style="{StaticResource MaterialDesignLightSeparator}" />
-
-                            <DockPanel Grid.Row="2" HorizontalAlignment="Right">
-                                <TextBlock
-                                    Grid.Row="0"
-                                    Margin="8"
-                                    Style="{StaticResource MaterialDesignCaptionTextBlock}"
-                                    Text="" />
-                                <Button
-                                    x:Name="btnCheckUpdateClashCore"
-                                    Width="100"
-                                    Content="{x:Static resx:ResUI.TbHelpCheck}"
-                                    DockPanel.Dock="Right"
-                                    Style="{StaticResource DefButton}" />
-                            </DockPanel>
-                        </Grid>
-                    </DockPanel>
-                </materialDesign:Card>
 
                 <materialDesign:Card
                     Width="300"
@@ -169,44 +133,8 @@
                         </Grid>
                     </DockPanel>
                 </materialDesign:Card>
-                
-                
-                <materialDesign:Card
-                    Width="300"
-                    Margin="8"
-                    Padding="16"
-                    materialDesign:UniformCornerRadius="8">
-                    <DockPanel>
-                        <Grid>
-                            <Grid.RowDefinitions>
-                                <RowDefinition Height="Auto" />
-                                <RowDefinition Height="Auto" />
-                                <RowDefinition Height="Auto" />
-                            </Grid.RowDefinitions>
-                            <TextBlock
-                                Grid.Row="0"
-                                Margin="16,16,16,4"
-                                Style="{StaticResource TabItemTitle}"
-                                Text="Update Geo Data" />
 
-                            <Separator Grid.Row="1" Style="{StaticResource MaterialDesignLightSeparator}" />
 
-                            <DockPanel Grid.Row="2" HorizontalAlignment="Right">
-                                <TextBlock
-                                    Grid.Row="0"
-                                    Margin="8"
-                                    Style="{StaticResource MaterialDesignCaptionTextBlock}"
-                                    Text="" />
-                                <Button
-                                    x:Name="btnCheckUpdateGeo"
-                                    Width="100"
-                                    Content="{x:Static resx:ResUI.TbHelpCheck}"
-                                    DockPanel.Dock="Right"
-                                    Style="{StaticResource DefButton}" />
-                            </DockPanel>
-                        </Grid>
-                    </DockPanel>
-                </materialDesign:Card>
             </WrapPanel>
         </ScrollViewer>
     </DockPanel>
diff --git a/clashN/clashN/Views/HelpView.xaml.cs b/clashN/clashN/Views/HelpView.xaml.cs
index 3bd5433..d3c3939 100644
--- a/clashN/clashN/Views/HelpView.xaml.cs
+++ b/clashN/clashN/Views/HelpView.xaml.cs
@@ -17,9 +17,9 @@ public HelpView()
             this.WhenActivated(disposables =>
             {
                 this.BindCommand(ViewModel, vm => vm.CheckUpdateCmd, v => v.btnCheckUpdateN).DisposeWith(disposables);
-                this.BindCommand(ViewModel, vm => vm.CheckUpdateClashCoreCmd, v => v.btnCheckUpdateClashCore).DisposeWith(disposables);
+                //this.BindCommand(ViewModel, vm => vm.CheckUpdateClashCoreCmd, v => v.btnCheckUpdateClashCore).DisposeWith(disposables);
                 this.BindCommand(ViewModel, vm => vm.CheckUpdateMihomoCoreCmd, v => v.btnCheckUpdateMihomoCore).DisposeWith(disposables);
-                this.BindCommand(ViewModel, vm => vm.CheckUpdateGeoDataCmd, v => v.btnCheckUpdateGeo).DisposeWith(disposables);
+                //this.BindCommand(ViewModel, vm => vm.CheckUpdateGeoDataCmd, v => v.btnCheckUpdateGeo).DisposeWith(disposables);
             });
         }