Firmware dump for the HP ProBook 6540b built on a Compal LA-4892P mainboard with the Intel HM57 chipset. The name also cites a 25L3205D flash chip, a 32 Mbit (4 MB) SPI part, and the archive weighs 1.95 MB. Technicians write such an image with a programmer clip to revive a board that fails to POST after a bad update. Read and keep the original chip contents before erasing, and confirm the LA number printed on the PCB matches, because firmware from another board revision may not boot.
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 | 2 Feb 2021 | Open file on RM Schematics |
| @Satale_bios_esquemas_Laptop | 21 Apr 2021 | 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 →