BIOS dump for a board labelled AAHD2-HY, revision 1.02, with a 2 MB image according to the name. The brand and device are not given, so identify the board from its PCB label before use. The 1.76 MB RAR holds firmware meant for a 2 MB SPI flash chip, written with a programmer such as a CH341A. Read and keep the original chip contents first, and check that the revision and chip capacity match, because an image of the wrong size will not fit.
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 →