1. First of all, turn the device on by holding down the Power key.
2. Now press & hold the Volume Up + Power buttons for a while.
3. Release these keys when an Android image appears on screen.
4. Navigate to Recovery option by pressing and holding Volume Down button for a few second, tapping and releasing Power button.
5. Done, you're in the Recovery Mode.
6. Use Volume buttons to scroll and Power button to select options.