1. Switch off your phone.
2. Take out the SD Card from the phone.
3. With the phone powered off, press down the RECORD (it is under the power button) and the POWER button at the same time for a few sec.
4. You will be prompted to "press any key to enter bootloader".
5. Then press and HOLD DOWN the action CENTER key (joy button) Bootloader menu.
If you press any other key you get to the 3 colored "Canary" screen.