Bios fix lỗi wifi http://www.vinafix.vn/threads/lenovo-y470-iqy0206a-whitelist-removal-fix-loi-104-rar.9089/
IQY0203AX64 1. Fixed the problem of AUO panel slight flickering after adjust brightness to lowest level. 2. Fixed the problem of "Fn+F6" no function by upgrading BIOS and Touchpad driver on the machine produced before 2011/4/25 (included) 5ZJY22A: Fied the problem of AUO panel slight flickering after adjusting brightness to lowest level. Fixed the problem of "Fn+F6" no function by upgrading BIOS and Touchpad driver on the machine produced before 2011/4/25 (included)