BIOS image for the HP dm4 series, a 4.00 MB file without an extension. Only the model name is given, with no board number or firmware version. Treat it as a raw full-chip dump that a programmer such as a CH341A can write to the SPI flash when the notebook is bricked. Before use, inspect it in a hex editor, read and archive the original chip, confirm the chip capacity is 4 MB, and match your mainboard number to the machine it was taken from.
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 @biosfilebins. Enginerys does not host this file.
Back up your own chip before writing any dump, and match the full board number and revision. Flashing guide →