BIOS package for the HP 15-ac113nx notebook, Compal board LA-C921P, revision 1.0, packed as a 5.26 MB RAR. Compal codes follow the LA- plus four characters plus P pattern and are printed on the mainboard, so check both the number and the revision. Laptop firmware like this is used to reprogram the SPI flash when a board will not post or shows a corrupted BIOS. Save a full read of the original chip first, and confirm the image size matches the chip before writing it with a programmer.
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 →