Firmware archive for the Acer Aspire One 721, named AO721, compressed to 682 KB in RAR format. Apart from the model, the name gives no BIOS version, motherboard number or flash size, so check the contents first. It serves to recover a netbook that fails to start or shows no image after a BIOS problem. The dump goes onto the SPI flash via an external programmer. Back up the existing chip first, and confirm the image size fits the chip capacity exactly.
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 →