It is a Flash upgrade for hardware on your Asus Computer. The Flash utility should have been preinstalled, somewhere on your OS, or may exists in the Bios settings. Flash products used to give big problems, such as , worst case, totally ruining your motherboard. Lately the situation has improved, but use the Flash utility with caution. If your computer works 100%, - leave it alone!
If you want more info, here is a good example: ASUSTeK Computer Inc.-Forum- EZ Flash 2 - the safest way to update BIOS