RAR archive holding a BIOS dump for the Lenovo V15 AMD laptop built on the NM-D522 board, revision 2.0. The NM- prefix is the LCFC numbering used for Lenovo motherboards. The brand tag in the index says Apple, but the name clearly points to Lenovo. Technicians write such an image to the SPI flash with a CH341A or similar programmer to recover a board that will not post. Back up the original chip first and make sure the image size matches 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 @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 | 16 Dec 2025 | Open file on RM Schematics |
| @sboisworld | 16 Dec 2025 | Open file on RM Schematics |
| @dtechbios | 16 Dec 2025 | Open file on RM Schematics |
| @skclappybios | 16 Dec 2025 | 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 →