Firmware archive for the HP EliteBook 850 G4 labelled as an unlock image, typically used to clear a BIOS administrator password or similar lock. Delivered as a 7.76 MB RAR, it is written to the SPI flash with an external programmer rather than through a software updater. No board number appears in the name, so confirm the platform before use. Read the original chip twice and compare the dumps before erasing, keep that backup safe, and verify the image size matches the flash capacity, otherwise the write will fail.
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 .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 →