Recover mode

For some reasons You could need to boot your device in recover mode (like for example when you plan to use webos doctor to restore your device).

It is a four steps process:
 * 1) With the USB cable connected, completely power off your device (hold down the power button until the option to power off appears)
 * 2) Hold down the Up button on the volume rocker
 * 3) While holding the Up button, power on your device
 * 4) You should now see a big USB log on the screen of the device

Here you are in recover mode!