Lenovo G50-30 BIOS at version A7CN48WW in a 64-bit build, for LCFC board NM-A311, archived as a 2.45 MB RAR. Lenovo version strings such as A7CN48WW identify the firmware family and release level. The board number came from the catalogue rather than the name, so confirm NM-A311 on your PCB. Extract and compare the image size with the SPI chip, then write it with an external programmer after saving the original contents.
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 (3)
The same file was posted more than once. If one link is dead, try the next.
| Channel | Posted | |
|---|---|---|
| @biosarchive | 7 Sept 2017 | Open file on RM Schematics |
| @biosarchive | 19 Jan 2019 | Open file on RM Schematics |
| @IT_SERVICE_WORLD | 29 Oct 2019 | 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 →