Boosted screen brightness / version

By keeping 5/ki pressed while turning the device on, screen and LED brightness can be temporarily increased from its default brightness. This may be useful if the default brightness is insufficient (for example in sunny outdoor scenarios). Turn the value knob to change the brightness. Press the value knob to continue the boot sequence (which should normally amount to a 1-2 second delay before dropping into Song mode). The device will display the firmware version it is running, until the boot sequence is complete.