diff --git a/v2rayN/ServiceLib/Services/DownloadService.cs b/v2rayN/ServiceLib/Services/DownloadService.cs
index db28ea72..f266824b 100644
--- a/v2rayN/ServiceLib/Services/DownloadService.cs
+++ b/v2rayN/ServiceLib/Services/DownloadService.cs
@@ -105,7 +105,7 @@ namespace ServiceLib.Services
         {
             try
             {
-                var result1 = await DownloadStringAsync(url, blProxy, userAgent);
+                var result1 = await DownloadStringAsync(url, blProxy, userAgent, 15);
                 if (Utils.IsNotEmpty(result1))
                 {
                     return result1;
@@ -123,7 +123,7 @@ namespace ServiceLib.Services
 
             try
             {
-                var result2 = await DownloadStringViaDownloader(url, blProxy, userAgent);
+                var result2 = await DownloadStringViaDownloader(url, blProxy, userAgent, 15);
                 if (Utils.IsNotEmpty(result2))
                 {
                     return result2;
@@ -139,26 +139,6 @@ namespace ServiceLib.Services
                 }
             }
 
-            try
-            {
-                using var wc = new WebClient();
-                wc.Proxy = GetWebProxy(blProxy);
-                var result3 = await wc.DownloadStringTaskAsync(url);
-                if (Utils.IsNotEmpty(result3))
-                {
-                    return result3;
-                }
-            }
-            catch (Exception ex)
-            {
-                Logging.SaveLog(ex.Message, ex);
-                Error?.Invoke(this, new ErrorEventArgs(ex));
-                if (ex.InnerException != null)
-                {
-                    Error?.Invoke(this, new ErrorEventArgs(ex.InnerException));
-                }
-            }
-
             return null;
         }
 
@@ -166,7 +146,7 @@ namespace ServiceLib.Services
         /// DownloadString
         /// </summary>
         /// <param name="url"></param>
-        public async Task<string?> DownloadStringAsync(string url, bool blProxy, string userAgent)
+        private async Task<string?> DownloadStringAsync(string url, bool blProxy, string userAgent, int timeout)
         {
             try
             {
@@ -192,7 +172,7 @@ namespace ServiceLib.Services
                 }
 
                 using var cts = new CancellationTokenSource();
-                var result = await HttpClientHelper.Instance.GetAsync(client, url, cts.Token).WaitAsync(TimeSpan.FromSeconds(30), cts.Token);
+                var result = await HttpClientHelper.Instance.GetAsync(client, url, cts.Token).WaitAsync(TimeSpan.FromSeconds(timeout), cts.Token);
                 return result;
             }
             catch (Exception ex)
@@ -211,7 +191,7 @@ namespace ServiceLib.Services
         /// DownloadString
         /// </summary>
         /// <param name="url"></param>
-        public async Task<string?> DownloadStringViaDownloader(string url, bool blProxy, string userAgent)
+        private async Task<string?> DownloadStringViaDownloader(string url, bool blProxy, string userAgent, int timeout)
         {
             try
             {
@@ -223,7 +203,7 @@ namespace ServiceLib.Services
                 {
                     userAgent = Utils.GetVersion(false);
                 }
-                var result = await DownloaderHelper.Instance.DownloadStringAsync(webProxy, url, userAgent, 30);
+                var result = await DownloaderHelper.Instance.DownloadStringAsync(webProxy, url, userAgent, timeout);
                 return result;
             }
             catch (Exception ex)
diff --git a/v2rayN/v2rayN.Desktop/Common/AvaUtils.cs b/v2rayN/v2rayN.Desktop/Common/AvaUtils.cs
index 0b9ff319..81b63799 100644
--- a/v2rayN/v2rayN.Desktop/Common/AvaUtils.cs
+++ b/v2rayN/v2rayN.Desktop/Common/AvaUtils.cs
@@ -40,25 +40,7 @@ namespace v2rayN.Desktop.Common
 
         public static WindowIcon GetAppIcon(ESysProxyType sysProxyType)
         {
-            int index = 1;
-            switch (sysProxyType)
-            {
-                case ESysProxyType.ForcedClear:
-                    index = 1;
-                    break;
-
-                case ESysProxyType.ForcedChange:
-                    index = 2;
-                    break;
-
-                case ESysProxyType.Unchanged:
-                    index = 3;
-                    break;
-
-                case ESysProxyType.Pac:
-                    index = 4;
-                    break;
-            }
+            var index = (int)sysProxyType + 1;
             var uri = new Uri($"avares://{Assembly.GetExecutingAssembly().GetName().Name}/Assets/NotifyIcon{index}.ico");
             using var bitmap = new Bitmap(AssetLoader.Open(uri));
             return new(bitmap);
diff --git a/v2rayN/v2rayN/Handler/WindowsHandler.cs b/v2rayN/v2rayN/Handler/WindowsHandler.cs
index 2520b47e..3c887d3c 100644
--- a/v2rayN/v2rayN/Handler/WindowsHandler.cs
+++ b/v2rayN/v2rayN/Handler/WindowsHandler.cs
@@ -13,7 +13,7 @@ namespace v2rayN.Handler
         {
             try
             {
-                int index = (int)config.systemProxyItem.sysProxyType;
+                var index = (int)config.systemProxyItem.sysProxyType;
 
                 //Load from routing setting
                 var createdIcon = await GetNotifyIcon4Routing(config);
@@ -46,29 +46,11 @@ namespace v2rayN.Handler
 
         public System.Windows.Media.ImageSource GetAppIcon(Config config)
         {
-            int index = 1;
-            switch (config.systemProxyItem.sysProxyType)
-            {
-                case ESysProxyType.ForcedClear:
-                    index = 1;
-                    break;
-
-                case ESysProxyType.ForcedChange:
-                    index = 2;
-                    break;
-
-                case ESysProxyType.Unchanged:
-                    index = 3;
-                    break;
-
-                case ESysProxyType.Pac:
-                    index = 4;
-                    break;
-            }
+            var index = (int)config.systemProxyItem.sysProxyType + 1;
             return BitmapFrame.Create(new Uri($"pack://application:,,,/Resources/NotifyIcon{index}.ico", UriKind.RelativeOrAbsolute));
         }
 
-        private async Task<Icon?>   GetNotifyIcon4Routing(Config config)
+        private async Task<Icon?> GetNotifyIcon4Routing(Config config)
         {
             try
             {