BIOS and EC firmware set for an HP 15 laptop using the Osamu2-BT-HPC-MV-MB-V1 motherboard. The RAR is around 2.69 MB and should contain separate images for the system BIOS flash and the embedded controller. Technicians use these when a notebook shows no power, no display or a fan running without boot, after ruling out hardware faults. Program the images with an external programmer, keep a backup of the original chips, and confirm the board name silk-screened on the PCB matches.
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 →