How to factory reset YUANDAO N90s? How to wipe all data in YUANDAO N90s? How to bypass screen lock in YUANDAO N90s? How to restore defaults in YUANDAO N90s?
The following tutorial shows all method of master reset YUANDAO N90s. Check out how to accomplish hard reset by hardware keys and Android 4.1 Jelly Bean settings. As a result your YUANDAO N90s will be as new and your Rockchip RK3066 core will run faster.
Hard Reset YuanDao N90S (N90SXX) - video