A BIOS / firmware dump. Shared as “a1502 old bios 100% okk”, 8.00 MB.
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 @THE_BIOS_WORLD. Enginerys does not host this file.
Back up your own chip before writing any dump, and match the full board number and revision. Flashing guide →