How to downgrade bios acer

สอน Upgrade และ Downgrade BIOS ของโน้ตบุ๊ค Acer ทุกรุ่นDonate ให้ที่นี่ TrueWallet : 0929466328Contact Me Garena : Mr_Marker2016 ...

After many requests I made a quick Tutorial on how to downgrade the V3-571G bios from 2.07 -2.21 down to an unlocked bios either version 2.04 or 2.21.-

If you want to downgrade to Windows 7 or 8.1 from Windows 10, you can go to Recovery under Settings, and select the Go back to Windows 7 option, and hit Get Started button.