BIOS archive for a board marked NB5222 MB V3 PCB, holding images for both 8MB and 16MB flash chips according to the name. No laptop brand or model is given, so identify the board by the number printed on the PCB before using it. Pick the image whose size matches the capacity of the SPI chip fitted on your board, because a file of the wrong size will not fit. Read and save the original chip contents with a programmer such as a CH341A before writing, so the board can be restored if needed.
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 | 28 Mar 2024 | Open file on RM Schematics |
| @generalbios | 8 Apr 2024 | Open file on RM Schematics |
| @generalbios | 14 Jul 2024 | Open file on RM Schematics |
| @generalbios | 4 Nov 2024 | 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 →