1. Press and hold the Power button until the device turns off.
2. Now press'n'hold the Power and Volume Up buttons at the same time. Wait for the Boot mode to appear and release them.
3. Use the Volume Up & Volume Down buttons in order to enter Recovery Mode.
4. When the Android robot appears, press and hold the Power button.
5. Now press Volume Up.
6. When in Recovery Mode, navigate with Volume and select options with Power buttons.