Gigabyte B550M Gaming motherboard BIOS for PCB revision 1.x, intended for a 32 MB flash chip, packed in a 59.9 MB RAR archive that likely holds more than one file. Use it with an SPI programmer to recover a board that does not post after a failed update or corruption. Check the revision printed near the board edge, read and save the existing chip contents first, and confirm the image you write is exactly 32 MB so that it matches the 256 Mbit chip capacity.
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 →