If the update fails during the upgrade, the update will be retried.

v2rayN/AmazTool/Program.cs

@@ -1,29 +1,39 @@
-namespace AmazTool
+namespace AmazTool
 {
     internal static class Program
     {
-        /// <summary>
-        /// 应用程序的主入口点。
-        /// </summary>
         [STAThread]
         private static void Main(string[] args)
         {
             if (args.Length == 0)
             {
-                Console.WriteLine(Resx.Resource.Guidelines);
-                Thread.Sleep(5000);
+                Utils.WriteLine(Resx.Resource.Guidelines);
+                Utils.Waiting(5);
                 return;
             }
 
             var argData = Uri.UnescapeDataString(string.Join(" ", args));
             if (argData.Equals("rebootas"))
             {
-                Thread.Sleep(1000);
+                Utils.Waiting(1);
                 Utils.StartV2RayN();
                 return;
             }
+           
+            var tryTimes = 0;
+            UpgradeApp.Init();
+            while (tryTimes++ < 3)
+            {
+                if (!UpgradeApp.Upgrade(argData))
+                {
+                    continue;
+                }
 
-            UpgradeApp.Upgrade(argData);
+                Utils.WriteLine(Resx.Resource.Restartv2rayN);
+                Utils.Waiting(3);
+                Utils.StartV2RayN();
+                break;
+            }
         }
     }
-}
+}