Mời cụ thử lại xem thế nào nhé:
1) Ignition "On"
2) Press and hold down Mute, ♪ and ★ till screen changes to "Test Mode"
3) Type the code "26" and press "Enter" then chose "DTV Test Mode Off - Complete" by using MZD dial
4) Type the code "27" and press "Enter" then chose "DTV Test Mode...