BIOS image for the ASUS X570DD motherboard, revision 2.0, with the version tag X570DDAS302 indicating firmware build 302. Supplied as a 3.78 MB RAR, it is intended for writing directly to the SPI flash chip with a hardware programmer such as a CH341A when the board will not boot or the BIOS is corrupt. Read and save the original chip contents first, since serial numbers and other unique data may be stored there. Check that the board revision matches and that the image size equals the capacity of the 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 →