ASUS Laptop X556UAK BIOS 317 Jul 14, 2020
... V4.0 (Optional) Changes:- Optimize system performanceAbout 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. ...