A BIOS / firmware dump. Shared as “B_570_48.4PA01.021_” — a .021_ file, 4.00 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 @schematics_bios. 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 →