Lenovo firmware archive labelled CG520 for the LCFC board NM-A801, packed as a 3.33 MB ZIP. LCFC, Lenovo's own manufacturing arm, uses NM-xxxx board codes that are printed on the PCB along with a revision. Matching both is the first step. The name does not state a firmware version or chip type, so inspect the contents before use. Such dumps are written to the SPI flash with an external programmer to fix a laptop that will not POST. Save the original chip data first and verify the image size.
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 (5)
The same file was posted more than once. If one link is dead, try the next.
| Channel | Posted | |
|---|---|---|
| @biosarchive | 16 Mar 2019 | Open file on RM Schematics |
| @IT_SERVICE_WORLD | 28 Oct 2019 | Open file on RM Schematics |
| @pepeelectronica | 24 Apr 2022 | Open file on RM Schematics |
| @schematics_bios | 24 Jul 2026 | Open file on RM Schematics |
| @schematics_bios | 1 Aug 2026 | 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 →