Download HERE (Sep 2017 firmware release with DAC function added)
*Enter the DAC mode by holding the middle enter button and turn on Alien+
Download HERE (July 2017 firmware release)
Place the file Alien+.1573 under root folder ( of a fat 32 format micro sd card ),
hold the right button and turn on your Alien+ unit,
automatically it will bring you to system update page and finish the update in a few secs.