BIOS image for the HP 22-b206d all-in-one, Quanta board DA0N91MB6D0 revision D, labelled as working and stored in a 5.44 MB RAR. The DA0 prefix is the Quanta pattern for board numbers, so Quanta is the ODM behind this HP model. Program it onto the SPI flash with an external programmer to fix a no-boot or corrupted-firmware fault. Save the original chip first, make sure the PCB reads DA0N91MB6D0 REV D, and confirm the dump size equals the flash capacity.
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 →