Before solving the error, let's establish the tool. HiSuite Proxy is a third-party PC tool that acts as a man-in-the-middle between the official Huawei HiSuite software and Huawei’s servers. It intercepts and replaces firmware URLs, allowing you to force-install specific firmware packages (ROMs) that are not officially approved for your device’s IMEI—such as downgrades from EMUI 12 to EMUI 10, or cross-region firmware.
Device: Huawei P30 Pro (VOG-L29 C431)
Attempted: Downgrade from EMUI 12 to EMUI 10 using HiSuite Proxy. group version not match hisuite proxy
Error: “Group version does not match HiSuite Proxy” Before solving the error, let's establish the tool
Diagnosis:
Fix:
Downloaded full EMUI 10 triplet from Firmware Finder – all three packages dated 2021-03-15. Reconfigured HiSuite Proxy with matching versions → error resolved. Fix: Downloaded full EMUI 10 triplet from Firmware
Find matching firmware
Use tools like FirmFinder or Support Assistant to download a full firmware pack where all parts are listed under the same release.
Use only Main + Cust + Preload
Don't mix files from different sources or dates. Stick to one complete package.