Working BIOS dump for the HP Pavilion x360 13 with the Brittle board, MB 15256-3. The 15256 number follows the Wistron numbering pattern, so the main board was built by Wistron for HP. The 5.37 MB archive is marked as a tested, working image. It is used to reprogram the SPI flash when the laptop has no display or a corrupted BIOS. Read and save the original chip before writing, and confirm the board number and -3 revision on the PCB match, since serial and system data may need to be carried over.
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 | 26 Jun 2022 | Open file on RM Schematics |
| @generalbios | 8 Oct 2023 | Open file on RM Schematics |
| @generalbios | 8 Oct 2023 | Open file on RM Schematics |
| @schematiclaptopramkushwaha | 4 Apr 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 →