Do not manually download CUST and Preload files from different posts. Instead:
: If you are rolling back (e.g., from EMUI 11 to 10), do not skip major versions. Revert to the version immediately prior to your current one first. Important Safety Warning Group version not match error · Issue #7 - GitHub group version not match hisuite proxy work
Every Huawei phone requires that these three components come from the same and region . If even one of these files has a different version number, build date, or region code, HiSuite will reject the update with a "Group version not match" error. Do not manually download CUST and Preload files