A BIOS / firmware dump (board 11291-1). Shared as “g580 lg4858 uma mb [11291-1]”, 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 @jdbiosworld. 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 →