Compressed BIOS firmware labelled g580, almost certainly referring to the Lenovo G580 notebook, although no brand is recorded. The RAR weighs 8.14 MB and gives no board number, revision or version, so open it and check what images it contains. G580 machines used more than one motherboard design, so confirm the code on your PCB before choosing a file. Typical use is programming the SPI BIOS chip with an external programmer to revive a dead unit. Back up the original contents and match the image size to the chip.
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 →