Firmware dump for the HP All-in-One 20, on Quanta board DAN91AMB6D0 revision D, described as working and supplied in a 4.28 MB RAR. The DA-prefixed number follows Quanta's ODM pattern, common in HP consumer machines. It is intended for reflashing the BIOS SPI chip with a programmer to recover a unit stuck at a black screen or failing to post. Confirm board number and revision on the PCB, back up the existing chip contents, and make sure the image size matches 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 →