BIOS package for the Lenovo ThinkCentre M720q Tiny, board number NM-B551, in an 8.51 MB RAR archive. The NM- pattern is the LCFC numbering used on Lenovo boards; ignore the Apple tag, as the name clearly refers to Lenovo. Extract the image and write it to the SPI flash with a programmer such as a CH341A, after reading and saving the original chip for serial and system data. Check that the image size matches the chip capacity and that the board number on the PCB is NM-B551.
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 @sbiosworldchannel. 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 | |
|---|---|---|
| @sbiosworldchannel | 24 Feb 2026 | Open file on RM Schematics |
| @skclappybios | 24 Feb 2026 | Open file on RM Schematics |
| @sboisworld | 24 Feb 2026 | Open file on RM Schematics |
| @dtechbios | 24 Feb 2026 | 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 →