BIOS firmware for Lenovo board NM-B321, revision 1, marked as tested and working, in a 4.48 MB RAR. NM- numbers follow the LCFC scheme used on Lenovo notebooks, and the laptop model is not stated, so the code on your PCB must read NM-B321. Flash the image to the SPI chip with a programmer when a board does not post or after a failed update. Back up the chip first to retain the serial and system data, and check that the image size suits the flash capacity before writing it.
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.
All sources (4)
The same file was posted more than once. If one link is dead, try the next.
| Channel | Posted | |
|---|---|---|
| @biosarchive | 3 Oct 2020 | Open file on RM Schematics |
| @ITHINKHS | 8 Oct 2020 | Open file on RM Schematics |
| @biositechyangiyer | 1 Feb 2021 | Open file on RM Schematics |
| @biosdumpcomputer | 26 May 2022 | Open file on RM Schematics |
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 →