BIOS dump from a Lenovo G570 notebook, model type 20079, with the unit serial number CB12698991 recorded in the name, packed as a 1.62 MB ZIP. Because it came from a specific machine, it may contain that unit identity data, which should be edited or replaced when flashed onto another board. No board number is given, so compare against the PCB before use. Write it to the SPI flash with a programmer after saving the original contents, and verify the image size against the chip capacity.
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 .zip file
Compressed archive that every operating system opens without extra software.
Back up your own chip before writing any dump, and match the full board number and revision. Flashing guide →