Firmware dump for the HP ProBook 4540s, a 3.61 MB zip with no further details in the name, so the board revision, graphics variant and ME state are unknown. It appears to be a standard full image rather than the cleaned-ME version also available for this model. Use it to recover a laptop with corrupted BIOS by flashing the SPI chip with an external programmer. Check the board code on the PCB, make a backup of the existing chip contents, and confirm the image length fits the installed flash 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.
How to open a .zip file
Compressed archive that every operating system opens without extra software.
Back up your own chip before writing any dump, and match the full board number and revision. Flashing guide →