BIOS firmware package for the Lenovo C560 all-in-one desktop, delivered as a 4.80 MB RAR archive. The name states no board number, BIOS version or flash chip, so inspect the extracted files to see whether they are a raw SPI dump or an update utility. A raw image is normally written with a programmer such as a CH341A after desoldering the chip or clipping onto it. Read and save the existing chip first. Make sure the image size matches the chip capacity, and check the motherboard identifier.
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 @Laptopbiossolutions. 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 →