RAR archive of roughly 4.3 MB carrying BIOS firmware for the V580C, a model name used by Lenovo laptops, though the brand and board number are not in the file name. Unpack it to see whether it contains a single flash image or several region files. Images like this are written to the SPI chip with a programmer to fix no-boot faults. Check the board number on your motherboard against the source, preserve the original chip dump, and make sure the image size matches the flash capacity before programming.
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 →