Firmware dump packed as a 3.19 MB RAR and named only with the code 300BWA0C01, a string that resembles a BIOS version or project identifier but states no device, brand or board number. Treat it as unverified until its contents can be matched to the machine on the bench. Repair use is typically reflashing a corrupted SPI chip with an external programmer. Always keep a backup of the original chip contents and confirm that the image size and chip capacity agree before you program it.
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 →