BIOS dump for a board labelled MA18 MB, carrying the Wistron-style board number 15315-1M, packed in a 4.83 MB RAR archive. The name marks the image as fully working, meaning it was reportedly taken from or verified on a functioning unit. Wistron builds boards for several laptop brands, so confirm the 15315-1M marking on the PCB itself before use. Extract the image, read and save the original SPI chip contents with a programmer such as a CH341A, and check that the file size matches the flash capacity before writing.
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 (2)
The same file was posted more than once. If one link is dead, try the next.
| Channel | Posted | |
|---|---|---|
| @biosarchive | 27 May 2023 | 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 →