Tested working BIOS dump for Lenovo board NM-A981, an 8 MB BIN file. NM-prefixed numbers follow the LCFC scheme used for Lenovo notebook motherboards. The 8 MB size fits a 64 Mbit SPI flash chip, which can be written with a CH341A or similar programmer to revive a board with corrupted firmware. Confirm the PCB number and revision, check the chip capacity and keep a backup of the existing contents, since serial number and product data may need to be restored afterwards.
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 @fixtronix_support_community. Enginerys does not host this file.
How to open a .bin file
A raw, byte-for-byte image of a flash chip: the main BIOS / UEFI, the embedded-controller (EC) firmware, or both.
Back up your own chip before writing any dump, and match the full board number and revision. Flashing guide →