BIOS firmware for the HP All-in-One 20 desktop, with a mainboard marked DAN91AMB6D0, in a 4.28 MB RAR archive. DA...MB6D0 numbers are Quanta designs: the middle characters identify the project and the final characters the board revision. Use the image to reprogram the board SPI chip with an external programmer when the unit no longer powers on or posts. Compare the board marking, verify the extracted image fits the chip exactly, and save a copy of the existing firmware before erasing.</p>
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 →