Fix: This indicates a corrupted firmware download or an incorrect file version. Redownload the R329Q V31 package and verify the file integrity.
Are you flashing to or just to upgrade features ?
: Use a software tool to burn the firmware image onto an SD card (minimum 8GB recommended).
Because R329Q V31 is an OEM board, there is no single "official" consumer website for downloads. Instead, the firmware files ( .img or .bin formats) are hosted across specialized technician forums and repositories. Trusted Download Portals