1. Ensure the device is powered off. 2. Press and hold the Volume Up and Power buttons until the Lenovo logo appears, then release the Power button. 3. Continue to hold the Volume Up button until the Android Recovery screen appears (about 10-15 seconds) then release both buttons. A blue screen with 'Installing system update' may display, followed by a screen with 'No command'; continue to wait until the recovery screen appears.
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