BIOS archive for an Acer AL15-52 laptop with board identifier NL40PUMB-0D, the SM prefix in the name possibly referring to the source. The name gives no further version details. A dump like this is programmed onto the SPI flash with a programmer such as a CH341A to restore a board with corrupted or missing firmware. Check that the board marking matches NL40PUMB-0D, save a copy of the existing chip before writing, and confirm the image size fits the flash capacity.
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 @sm_bios. 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 | |
|---|---|---|
| @sm_bios | 3 Jun 2026 | Open file on RM Schematics |
| @smbiossupport | 3 Jun 2026 | 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 →