Official BIOS image for Lenovo board NM-A981, an LCFC design, packed as a 4.75 MB RAR; the name does not state the laptop model. The official tag suggests a clean vendor image rather than a dump from a used unit, so system serials may need to be restored. Use it to reflash the SPI chip with a programmer. Confirm the NM-A981 marking on the PCB, back up the current chip contents first, and check the image size matches the flash 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 @afsbiosfree. 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 →