HP Pavilion dv4 BIOS image for the JAL50 platform, Compal board LA-4103P, stored in an 841 KB RAR. Compal uses the LA- prefix with a trailing P for its laptop board numbers, and JAL50 is the Compal project code. The dump is written with an SPI programmer when the notebook powers on without display or has corrupted firmware. Save the original chip contents before writing, make sure the image size equals the flash capacity, and compare the LA number on the PCB with this file.
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 →