BIOS dump for the HP ProBook 470 on a Compal LA-B181P board, version tagged M74, with the Intel Management Engine region cleared, so it can be written without carrying ME state from another machine. Packed as a 4.03 MB RAR. Compal numbers its laptop boards in the LA-xxxxP format, so verify that code on the PCB. Save a copy of the original SPI chip with a programmer before flashing, compare image and chip size, and expect to restore serial or DMI data afterwards.
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 →