BIOS archive for the Lenovo G500 laptop, with no board number, revision or version in the name. The 3.00 MB RAR must be unpacked to find the image intended for the SPI chip. Several different mainboards were used across this model line, so identify the board number printed on your PCB and verify it fits before use. Write it with an external programmer to recover a dead board, check the image size matches the chip capacity, and keep a dump of the original contents.
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 @biosbigarchives. 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 →