Lenovo firmware archive for the NM-A311 motherboard, revision 1.0, with the project codes ACLU9 and ACLU0 listed in the name, compressed into a 2.51 MB ZIP. NM-xxxx board numbers follow the LCFC pattern used for Lenovo laptops, and the code is printed on the PCB. Technicians use such a dump to reprogram the SPI flash chip when a machine shows no display or a damaged BIOS after a failed update. Make sure the board number and revision match, back up the original chip first and check that 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 @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 →