Working BIOS for the Gigabyte B450M-S2H desktop motherboard, an AMD B450 chipset board for AM4 processors, marked as fully tested. The RAR archive is 21.5 MB, so it may contain more than one image or support files. Technicians use such a dump to reprogram the SPI chip with an external programmer when the board fails to POST or a flash update failed. Gigabyte boards often carry dual BIOS chips, so identify the correct one, back up its contents and confirm the image size matches.
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 @biosarchive. 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 →