diff --git a/src/c#/GeneralUpdate.PacketTool/ViewModels/MainViewModel.cs b/src/c#/GeneralUpdate.PacketTool/ViewModels/MainViewModel.cs
index c26c52c77ba4b606b2a31643dd8929c5df92791a..a9547a3f3e31564452dd0d68b6245873f4cae23e 100644
--- a/src/c#/GeneralUpdate.PacketTool/ViewModels/MainViewModel.cs
+++ b/src/c#/GeneralUpdate.PacketTool/ViewModels/MainViewModel.cs
@@ -1,4 +1,4 @@
-using CommunityToolkit.Mvvm.Input;
+using CommunityToolkit.Mvvm.Input;
 using GeneralUpdate.AspNetCore.DTO;
 using GeneralUpdate.Core.Domain.Enum;
 using GeneralUpdate.Core.Utils;
@@ -343,7 +343,7 @@ namespace GeneralUpdate.PacketTool.ViewModels
                     result = 1;
                     break;
 
-                case "UTF8":
+                case "Upgrade":
                     result = 2;
                     break;
             }