Make sure that the firmware is in the root directory of the USB stick.

Plug the USB memory stick into the front panel USB connector with the unit turned off.

Press, and hold in the 'SELECT' knob while switching the unit on.  This will cause the console to boot into the update mode.

The unit will wait for the USB drive to become ready and then run a fully automated firmware update.

If a USB stick fails to get ready, updating will not be possible and it is recommended to switch the unit off and then restart from the beginning.

The update process will take two to three minutes longer than the regular boot sequence.