BIOS image set for the Lenovo ThinkPad E540, motherboard NM-A161, in a 4.77 MB RAR archive with no revision or version given in the name. The NM-A numbering indicates an LCFC board, and the same platform also serves the E440, so check the model and the code printed on the PCB. Typical use is recovering a no-boot or bricked board by reprogramming the SPI flash with a CH341A or similar tool. Read the original chip first, keep that backup, and confirm the file size equals 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 @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 →