Compressed BIOS firmware for the Acer Aspire One 721 (AO721) netbook, 636 KB. Beyond the model, the name says nothing about version, board or contents, so inspect the archive before use. A raw image inside can be written to the SPI flash with a CH341A-type programmer when the unit fails to boot, while an update package needs a working machine. Back up the existing chip before writing, confirm the image matches the chip capacity, and check the board label first.
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 @ComputerBIOSBinFile. 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 →