If you are on EMUI 11 and want HarmonyOS 2.0, you likely cannot do it in one jump if the server sends a "Group Version Not Match".
A mismatch in regional codes (e.g., C432 for Europe vs. C636 for Asia) will trigger this error. Systemupdate.log located at C:/Users/[YourUser]/AppData/Local/HiSuite/log/ group version not match hisuite proxy work
The error usually happens because the fullota file name/version in the proxy tool does not match the transition path required for your current firmware. If you are on EMUI 11 and want HarmonyOS 2
If the path is correct but the error persists, the system might be stuck in a specific update "Group." group version not match hisuite proxy work
Disable your Windows Firewall or antivirus temporarily, as they can block the proxy connection.