BIOS image for the Quanta DAN91CMB6D0 motherboard at revision D, with AMD noted in the name, delivered as a 2.50 MB RAR. Quanta uses this numbering with the project code N91, so verify the full code and revision letter printed on the board. A dump such as this is used to recover a board that does not post because of corrupted firmware, by writing it with an SPI programmer. Back up the original contents first and check that the extracted file size matches the capacity of the installed flash chip.
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 →