Firmware dump for an HP 4540, which by naming convention is a ProBook 4540s, stored as an 8.00 MB binary. The repeated OK in the name indicates the uploader reported it as tested and working. No board number or revision is given, so compare the PCB markings with a known-good unit. The 8 MB size suits a 64 Mbit SPI chip. Write it with a hardware programmer after backing up the original, since HP images may contain machine-specific serial and product data.
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 @biosbigarchives. Enginerys does not host this file.
How to open a .bin file
A raw, byte-for-byte image of a flash chip: the main BIOS / UEFI, the embedded-controller (EC) firmware, or both.
Back up your own chip before writing any dump, and match the full board number and revision. Flashing guide →