diff --git a/v2rayN/Directory.Build.props b/v2rayN/Directory.Build.props
index 6c744bb5..12693e1c 100644
--- a/v2rayN/Directory.Build.props
+++ b/v2rayN/Directory.Build.props
@@ -1,7 +1,7 @@
 <Project>
 
     <PropertyGroup>
-        <Version>7.19.2</Version>
+        <Version>7.19.3</Version>
     </PropertyGroup>
 
     <PropertyGroup>
diff --git a/v2rayN/ServiceLib/Global.cs b/v2rayN/ServiceLib/Global.cs
index 88a97398..903e4e8e 100644
--- a/v2rayN/ServiceLib/Global.cs
+++ b/v2rayN/ServiceLib/Global.cs
@@ -95,7 +95,7 @@ public class Global
 
     public const string PolicyGroupDefaultAllFilter = $"^(?!.*(?:{PolicyGroupExcludeKeywords})).*$";
 
-    public static readonly List<string> PolicyGroupDefaultFilterList = 
+    public static readonly List<string> PolicyGroupDefaultFilterList =
     [
         // All nodes (exclude traffic/expiry info)
         PolicyGroupDefaultAllFilter,
diff --git a/v2rayN/ServiceLib/Handler/Builder/CoreConfigContextBuilder.cs b/v2rayN/ServiceLib/Handler/Builder/CoreConfigContextBuilder.cs
index 1cbfbf14..ddc98a1f 100644
--- a/v2rayN/ServiceLib/Handler/Builder/CoreConfigContextBuilder.cs
+++ b/v2rayN/ServiceLib/Handler/Builder/CoreConfigContextBuilder.cs
@@ -227,7 +227,7 @@ public class CoreConfigContextBuilder
     {
         var result = NodeValidatorResult.Empty();
 
-        if (node.Subid.IsNullOrEmpty())
+        if (node.Subid.IsNullOrEmpty() || node.ConfigType == EConfigType.Custom)
         {
             return (null, result);
         }
diff --git a/v2rayN/ServiceLib/Handler/Builder/NodeValidator.cs b/v2rayN/ServiceLib/Handler/Builder/NodeValidator.cs
index a6adf1c2..65110b2a 100644
--- a/v2rayN/ServiceLib/Handler/Builder/NodeValidator.cs
+++ b/v2rayN/ServiceLib/Handler/Builder/NodeValidator.cs
@@ -81,7 +81,9 @@ public class NodeValidator
         {
             var transportError = ValidateSingboxTransport(item.ConfigType, net);
             if (transportError != null)
+            {
                 v.Error(transportError);
+            }
 
             if (!Global.SingboxSupportConfigType.Contains(item.ConfigType))
             {
diff --git a/v2rayN/ServiceLib/Handler/ConfigHandler.cs b/v2rayN/ServiceLib/Handler/ConfigHandler.cs
index 3e16fc3e..d1704b80 100644
--- a/v2rayN/ServiceLib/Handler/ConfigHandler.cs
+++ b/v2rayN/ServiceLib/Handler/ConfigHandler.cs
@@ -723,8 +723,6 @@ public static class ConfigHandler
         profileItem.SetProtocolExtra(profileItem.GetProtocolExtra() with
         {
             SalamanderPass = profileItem.GetProtocolExtra().SalamanderPass?.TrimEx(),
-            UpMbps = profileItem.GetProtocolExtra().UpMbps is null or < 0 ? config.HysteriaItem.UpMbps : profileItem.GetProtocolExtra().UpMbps,
-            DownMbps = profileItem.GetProtocolExtra().DownMbps is null or < 0 ? config.HysteriaItem.DownMbps : profileItem.GetProtocolExtra().DownMbps,
             HopInterval = profileItem.GetProtocolExtra().HopInterval?.TrimEx(),
         });
 
@@ -1042,8 +1040,8 @@ public static class ConfigHandler
 
         if (profileItem.StreamSecurity.IsNotEmpty())
         {
-            if (profileItem.StreamSecurity != Global.StreamSecurity
-                 && profileItem.StreamSecurity != Global.StreamSecurityReality)
+            if (profileItem.StreamSecurity is not Global.StreamSecurity
+                 and not Global.StreamSecurityReality)
             {
                 profileItem.StreamSecurity = string.Empty;
             }
diff --git a/v2rayN/ServiceLib/Models/ServerTestItem.cs b/v2rayN/ServiceLib/Models/ServerTestItem.cs
index f1622a7c..bce76364 100644
--- a/v2rayN/ServiceLib/Models/ServerTestItem.cs
+++ b/v2rayN/ServiceLib/Models/ServerTestItem.cs
@@ -10,6 +10,6 @@ public class ServerTestItem
     public bool AllowTest { get; set; }
     public bool NeedAutoFillRemarks { get; set; }
     public int QueueNum { get; set; }
-    public required ProfileItem Profile { get; set; }
+    public ProfileItem Profile { get; set; }
     public ECoreType CoreType { get; set; }
 }
diff --git a/v2rayN/ServiceLib/Models/V2rayConfig.cs b/v2rayN/ServiceLib/Models/V2rayConfig.cs
index 2393d5fb..6d4eabcb 100644
--- a/v2rayN/ServiceLib/Models/V2rayConfig.cs
+++ b/v2rayN/ServiceLib/Models/V2rayConfig.cs
@@ -360,6 +360,7 @@ public class TlsSettings4Ray
     public bool? disableSystemRoot { get; set; }
     public string? echConfigList { get; set; }
     public string? echForceQuery { get; set; }
+    public Sockopt4Ray? echSockopt { get; set; }
 }
 
 public class CertificateSettings4Ray
diff --git a/v2rayN/ServiceLib/Services/CoreConfig/Singbox/SingboxDnsService.cs b/v2rayN/ServiceLib/Services/CoreConfig/Singbox/SingboxDnsService.cs
index afab27d9..f09d3ee9 100644
--- a/v2rayN/ServiceLib/Services/CoreConfig/Singbox/SingboxDnsService.cs
+++ b/v2rayN/ServiceLib/Services/CoreConfig/Singbox/SingboxDnsService.cs
@@ -243,7 +243,6 @@ public partial class CoreConfigSingboxService
                 if (Utils.IsIpv6(predefined))
                 {
                     rule.answer = new List<string> { $"*. IN AAAA {predefined}" };
-
                 }
                 else
                 {
diff --git a/v2rayN/ServiceLib/Services/CoreConfig/V2ray/CoreConfigV2rayService.cs b/v2rayN/ServiceLib/Services/CoreConfig/V2ray/CoreConfigV2rayService.cs
index ca8eeb0d..545e713e 100644
--- a/v2rayN/ServiceLib/Services/CoreConfig/V2ray/CoreConfigV2rayService.cs
+++ b/v2rayN/ServiceLib/Services/CoreConfig/V2ray/CoreConfigV2rayService.cs
@@ -316,16 +316,24 @@ public partial class CoreConfigV2rayService(CoreConfigContext context)
                 SsMethod = Global.None,
             });
 
-            foreach (var outbound in _coreConfig.outbounds.Where(outbound => outbound.streamSettings?.sockopt?.dialerProxy?.IsNullOrEmpty() ?? true))
+            foreach (var outbound in _coreConfig.outbounds
+                .Where(o => o.streamSettings?.sockopt?.dialerProxy?.IsNullOrEmpty() ?? true))
             {
-                outbound.streamSettings ??= new StreamSettings4Ray();
-                outbound.streamSettings.sockopt ??= new Sockopt4Ray();
-                outbound.streamSettings.sockopt.dialerProxy = "tun-project-ss";
+                outbound.streamSettings ??= new();
+                outbound.streamSettings.sockopt ??= new();
+                outbound.streamSettings.sockopt.dialerProxy = "tun-protect-ss";
+            }
+            // ech protected
+            foreach (var outbound in _coreConfig.outbounds
+                .Where(outbound => outbound.streamSettings?.tlsSettings?.echConfigList?.IsNullOrEmpty() == false))
+            {
+                outbound.streamSettings!.tlsSettings!.echSockopt ??= new();
+                outbound.streamSettings.tlsSettings.echSockopt.dialerProxy = "tun-protect-ss";
             }
             _coreConfig.outbounds.Add(new CoreConfigV2rayService(context with
             {
                 Node = protectNode,
-            }).BuildProxyOutbound("tun-project-ss"));
+            }).BuildProxyOutbound("tun-protect-ss"));
 
             _coreConfig.routing.rules ??= [];
             var hasBalancer = _coreConfig.routing.balancers is { Count: > 0 };
diff --git a/v2rayN/ServiceLib/Services/UpdateService.cs b/v2rayN/ServiceLib/Services/UpdateService.cs
index d368108c..f9d9a5f8 100644
--- a/v2rayN/ServiceLib/Services/UpdateService.cs
+++ b/v2rayN/ServiceLib/Services/UpdateService.cs
@@ -363,44 +363,36 @@ public class UpdateService(Config config, Func<bool, string, Task> updateFunc)
         var geoipFiles = new List<string>();
         var geoSiteFiles = new List<string>();
 
-        //Collect used files list
+        // Collect from routing rules
         var routingItems = await AppManager.Instance.RoutingItems();
         foreach (var routing in routingItems)
         {
             var rules = JsonUtils.Deserialize<List<RulesItem>>(routing.RuleSet);
             foreach (var item in rules ?? [])
             {
-                foreach (var ip in item.Ip ?? [])
-                {
-                    var prefix = "geoip:";
-                    if (ip.StartsWith(prefix))
-                    {
-                        geoipFiles.Add(ip.Substring(prefix.Length));
-                    }
-                }
-
-                foreach (var domain in item.Domain ?? [])
-                {
-                    var prefix = "geosite:";
-                    if (domain.StartsWith(prefix))
-                    {
-                        geoSiteFiles.Add(domain.Substring(prefix.Length));
-                    }
-                }
+                AddPrefixedItems(item.Ip, "geoip:", geoipFiles);
+                AddPrefixedItems(item.Domain, "geosite:", geoSiteFiles);
             }
         }
 
-        //append dns items TODO
-        geoSiteFiles.Add("google");
-        geoSiteFiles.Add("cn");
-        geoSiteFiles.Add("geolocation-cn");
-        geoSiteFiles.Add("category-ads-all");
+        // Collect from DNS configuration
+        var dnsItem = await AppManager.Instance.GetDNSItem(ECoreType.sing_box);
+        if (dnsItem != null)
+        {
+            ExtractDnsRuleSets(dnsItem.NormalDNS, geoipFiles, geoSiteFiles);
+            ExtractDnsRuleSets(dnsItem.TunDNS, geoipFiles, geoSiteFiles);
+        }
 
+        // Append default items
+        geoSiteFiles.AddRange(["google", "cn", "geolocation-cn", "category-ads-all"]);
+
+        // Download files
         var path = Utils.GetBinPath("srss");
         if (!Directory.Exists(path))
         {
             Directory.CreateDirectory(path);
         }
+
         foreach (var item in geoipFiles.Distinct())
         {
             await UpdateSrsFile("geoip", item);
@@ -412,6 +404,63 @@ public class UpdateService(Config config, Func<bool, string, Task> updateFunc)
         }
     }
 
+    private void AddPrefixedItems(List<string>? items, string prefix, List<string> output)
+    {
+        if (items == null)
+        {
+            return;
+        }
+
+        foreach (var item in items)
+        {
+            if (item.StartsWith(prefix))
+            {
+                output.Add(item.Substring(prefix.Length));
+            }
+        }
+    }
+
+    private void ExtractDnsRuleSets(string? dnsJson, List<string> geoipFiles, List<string> geoSiteFiles)
+    {
+        if (string.IsNullOrEmpty(dnsJson))
+        {
+            return;
+        }
+
+        try
+        {
+            var dns = JsonUtils.Deserialize<Dns4Sbox>(dnsJson);
+            if (dns?.rules != null)
+            {
+                foreach (var rule in dns.rules)
+                {
+                    ExtractSrsRuleSets(rule, geoipFiles, geoSiteFiles);
+                }
+            }
+        }
+        catch { }
+    }
+
+    private void ExtractSrsRuleSets(Rule4Sbox? rule, List<string> geoipFiles, List<string> geoSiteFiles)
+    {
+        if (rule == null)
+        {
+            return;
+        }
+
+        AddPrefixedItems(rule.rule_set, "geosite-", geoSiteFiles);
+        AddPrefixedItems(rule.rule_set, "geoip-", geoipFiles);
+
+        // Handle nested rules recursively
+        if (rule.rules != null)
+        {
+            foreach (var nestedRule in rule.rules)
+            {
+                ExtractSrsRuleSets(nestedRule, geoipFiles, geoSiteFiles);
+            }
+        }
+    }
+
     private async Task UpdateSrsFile(string type, string srsName)
     {
         var srsUrl = string.IsNullOrEmpty(_config.ConstItem.SrsSourceUrl)
diff --git a/v2rayN/ServiceLib/ViewModels/AddServerViewModel.cs b/v2rayN/ServiceLib/ViewModels/AddServerViewModel.cs
index 86a807db..dce9c865 100644
--- a/v2rayN/ServiceLib/ViewModels/AddServerViewModel.cs
+++ b/v2rayN/ServiceLib/ViewModels/AddServerViewModel.cs
@@ -27,10 +27,10 @@ public class AddServerViewModel : MyReactiveObject
     public string Ports { get; set; }
 
     [Reactive]
-    public int UpMbps { get; set; }
+    public int? UpMbps { get; set; }
 
     [Reactive]
-    public int DownMbps { get; set; }
+    public int? DownMbps { get; set; }
 
     [Reactive]
     public string HopInterval { get; set; }
@@ -113,8 +113,8 @@ public class AddServerViewModel : MyReactiveObject
         AlterId = int.TryParse(protocolExtra?.AlterId, out var result) ? result : 0;
         Flow = protocolExtra?.Flow ?? string.Empty;
         SalamanderPass = protocolExtra?.SalamanderPass ?? string.Empty;
-        UpMbps = protocolExtra?.UpMbps ?? _config.HysteriaItem.UpMbps;
-        DownMbps = protocolExtra?.DownMbps ?? _config.HysteriaItem.DownMbps;
+        UpMbps = protocolExtra?.UpMbps;
+        DownMbps = protocolExtra?.DownMbps;
         HopInterval = protocolExtra?.HopInterval.IsNullOrEmpty() ?? true ? Global.Hysteria2DefaultHopInt.ToString() : protocolExtra.HopInterval;
         VmessSecurity = protocolExtra?.VmessSecurity?.IsNullOrEmpty() == false ? protocolExtra.VmessSecurity : Global.DefaultSecurity;
         VlessEncryption = protocolExtra?.VlessEncryption.IsNullOrEmpty() == false ? protocolExtra.VlessEncryption : Global.None;
@@ -169,8 +169,8 @@ public class AddServerViewModel : MyReactiveObject
             AlterId = AlterId > 0 ? AlterId.ToString() : null,
             Flow = Flow.NullIfEmpty(),
             SalamanderPass = SalamanderPass.NullIfEmpty(),
-            UpMbps = UpMbps >= 0 ? UpMbps : null,
-            DownMbps = DownMbps >= 0 ? DownMbps : null,
+            UpMbps = UpMbps,
+            DownMbps = DownMbps,
             HopInterval = HopInterval.NullIfEmpty(),
             VmessSecurity = VmessSecurity.NullIfEmpty(),
             VlessEncryption = VlessEncryption.NullIfEmpty(),
diff --git a/v2rayN/ServiceLib/ViewModels/OptionSettingViewModel.cs b/v2rayN/ServiceLib/ViewModels/OptionSettingViewModel.cs
index 8462a2c3..b5bfe71f 100644
--- a/v2rayN/ServiceLib/ViewModels/OptionSettingViewModel.cs
+++ b/v2rayN/ServiceLib/ViewModels/OptionSettingViewModel.cs
@@ -22,8 +22,8 @@ public class OptionSettingViewModel : MyReactiveObject
     [Reactive] public string defUserAgent { get; set; }
     [Reactive] public string mux4SboxProtocol { get; set; }
     [Reactive] public bool enableCacheFile4Sbox { get; set; }
-    [Reactive] public int hyUpMbps { get; set; }
-    [Reactive] public int hyDownMbps { get; set; }
+    [Reactive] public int? hyUpMbps { get; set; }
+    [Reactive] public int? hyDownMbps { get; set; }
     [Reactive] public bool enableFragment { get; set; }
 
     #endregion Core
@@ -336,8 +336,8 @@ public class OptionSettingViewModel : MyReactiveObject
         _config.CoreBasicItem.DefUserAgent = defUserAgent;
         _config.Mux4SboxItem.Protocol = mux4SboxProtocol;
         _config.CoreBasicItem.EnableCacheFile4Sbox = enableCacheFile4Sbox;
-        _config.HysteriaItem.UpMbps = hyUpMbps;
-        _config.HysteriaItem.DownMbps = hyDownMbps;
+        _config.HysteriaItem.UpMbps = hyUpMbps ?? 0;
+        _config.HysteriaItem.DownMbps = hyDownMbps ?? 0;
         _config.CoreBasicItem.EnableFragment = enableFragment;
 
         _config.GuiItem.AutoRun = AutoRun;
diff --git a/v2rayN/v2rayN.Desktop/Views/ClashConnectionsView.axaml.cs b/v2rayN/v2rayN.Desktop/Views/ClashConnectionsView.axaml.cs
index 23722ad0..4bf5237b 100644
--- a/v2rayN/v2rayN.Desktop/Views/ClashConnectionsView.axaml.cs
+++ b/v2rayN/v2rayN.Desktop/Views/ClashConnectionsView.axaml.cs
@@ -8,9 +8,9 @@ public partial class ClashConnectionsView : ReactiveUserControl<ClashConnections
     public ClashConnectionsView()
     {
         InitializeComponent();
-        
+
         _config = AppManager.Instance.Config;
-        
+
         ViewModel = new ClashConnectionsViewModel(UpdateViewHandler);
         btnAutofitColumnWidth.Click += BtnAutofitColumnWidth_Click;
 
@@ -65,7 +65,7 @@ public partial class ClashConnectionsView : ReactiveUserControl<ClashConnections
     {
         ViewModel?.ClashConnectionClose(false);
     }
-    
+
     #region UI
 
     private void RestoreUI()
diff --git a/v2rayN/v2rayN/Views/ProfilesSelectWindow.xaml.cs b/v2rayN/v2rayN/Views/ProfilesSelectWindow.xaml.cs
index e357044c..5122b1f4 100644
--- a/v2rayN/v2rayN/Views/ProfilesSelectWindow.xaml.cs
+++ b/v2rayN/v2rayN/Views/ProfilesSelectWindow.xaml.cs
@@ -97,8 +97,7 @@ public partial class ProfilesSelectWindow
 
     private void LstProfiles_ColumnHeader_Click(object sender, RoutedEventArgs e)
     {
-        var colHeader = sender as DataGridColumnHeader;
-        if (colHeader == null || colHeader.TabIndex < 0 || colHeader.Column == null)
+        if (sender is not DataGridColumnHeader colHeader || colHeader.TabIndex < 0 || colHeader.Column == null)
         {
             return;
         }
diff --git a/v2rayN/v2rayN/Views/ProfilesView.xaml.cs b/v2rayN/v2rayN/Views/ProfilesView.xaml.cs
index 1440e6ec..b088fe7b 100644
--- a/v2rayN/v2rayN/Views/ProfilesView.xaml.cs
+++ b/v2rayN/v2rayN/Views/ProfilesView.xaml.cs
@@ -233,8 +233,7 @@ public partial class ProfilesView
 
     private void LstProfiles_ColumnHeader_Click(object sender, RoutedEventArgs e)
     {
-        var colHeader = sender as DataGridColumnHeader;
-        if (colHeader == null || colHeader.TabIndex < 0 || colHeader.Column == null)
+        if (sender is not DataGridColumnHeader colHeader || colHeader.TabIndex < 0 || colHeader.Column == null)
         {
             return;
         }