Second copy of the HP G640 G1 unlock firmware, a 16.0 MB raw .bin image suited to a 128 Mbit SPI chip. The unlock label points to a dump with password or security locks removed, used to regain access to locked business machines. Compare it with the other copy to make sure the file is intact. Before programming, read and keep the original chip contents, because product IDs and the Management Engine settings stored there may differ from this image.
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 @biosfilebins. 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 →