: The firmware version you are trying to install does not match your phone's region (e.g., trying to install a C431 European firmware on a C636 Asian device).

: You may have only added the "Base" package without the required "CUST" and "Preload" files.

: Tick the boxes for CUST PKG and Preload PKG before clicking "Setup". 2. Use an Older Version of HiSuite

: Using a newer version of HiSuite (like 11.0+) which may have patched the proxy method. Step-by-Step Fixes for HiSuite Proxy 1. Add CUST and Preload Packages

: Dial *#*#2846579#*#* on your phone, go to Background Settings > Version Info , and note your CUST and Preload strings.

: In HiSuite Proxy, ensure you have added the URLs for Base , CUST , and Preload .

: Attempting to jump across major versions (e.g., EMUI 9 straight to EMUI 11) without following an incremental update path.

group version not match hisuite proxy new

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