BIOS image labelled only g580 l, presumably for a Lenovo G580. The trailing letter is not explained, and the name gives no board number or revision. The file has no extension and is 8 MB, which corresponds to a 64 Mbit SPI chip. G580 laptops were built on more than one motherboard, so check the board number on your PCB before using it. Write it with an external programmer to recover a dead board, after reading and saving the original 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 @biosfilebins. 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 →