Acer Extensa 2520G BIOS 1.09 Apr 11, 2016
... Change EC to version v2.4. About OS Independent BIOS: Although installing a newer BIOS version might add new features, update various components, or improve the device’s usability, this ... the most commonly used method to flash the BIOS is by creating a bootable USB or CD containing the update file, and running it from DOS. ...