BIOS-related archive for the Wistron PETRA board, UMA version, number 11324-1, with the extra reference 4VM02. UMA means integrated graphics without a dedicated GPU, so do not use it on discrete-graphics variants. The RAR is only 57.6 KB, which suggests it holds an EC/KBC firmware or a partial region rather than a full BIOS image. Wistron projects use codenames with five-digit board numbers like this one. Check the contents and target chip carefully, and back up the original before programming.
The button opens the matching file on RM Schematics, or a source page if it is not catalogued there yet. The original attachment is from @afsbiosfree. Enginerys does not host this file.
How to open a .rar file
Compressed archive — the usual wrapper for a schematic + boardview pair or a BIOS + EC set.
Back up your own chip before writing any dump, and match the full board number and revision. Flashing guide →