BIOS firmware archive for a Lenovo laptop built on the NM-A805 motherboard, packed as a 3.63 MB zip. The name gives no model, revision or chip details, so open the archive and inspect its contents before use. NM-prefixed numbers follow the LCFC numbering used for Lenovo's in-house boards. Such a dump is normally written to the SPI flash chip with a programmer such as a CH341A. Read and save the original chip first, and confirm the board number on the PCB and that the image size matches 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 @bios_laptop. Enginerys does not host this file.
All sources (3)
The same file was posted more than once. If one link is dead, try the next.
| Channel | Posted | |
|---|---|---|
| @bios_laptop | 15 Jun 2022 | Open file on RM Schematics |
| @Satale_bios_esquemas_Laptop | 27 May 2023 | Open file on RM Schematics |
| @ComputerBIOSBinFile | 21 Sept 2025 | Open file on RM Schematics |
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 →