Working BIOS package for an HP DV4 laptop on the WSND board at revision 2.1, packed as an 11.7 MB RAR archive. The name claims the dump has been tested as working. Extract it with an archiver and check which binary matches your flash chip, since the archive may contain several files. Technicians use such images to reprogram the SPI BIOS chip with a programmer when the system shows no display or loops on power. Keep a backup of the original chip and confirm the WSND revision before writing.
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 →