BIOS firmware archive for a Lenovo laptop built on the NM-A471 motherboard, packed as a RAR of 3.61 MB and marked OK, meaning the dump was reported as working. NM-A numbers follow the LCFC pattern, the Lenovo-owned design house behind many IdeaPad and ThinkPad boards. Extract the image and write it to the SPI flash with a programmer such as a CH341A. Before flashing, confirm the NM-A471 code on the PCB, read and save the original chip contents, and check that the image 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 →