Works. Reboot only from shell, but works! (I have to edit the Dialogbuttonmenu.xml so I hope it will be possible from the menu)
The remote (from the Allwinner H3 MXQ Pro TV-Box) works also. So it is now a very good alternative to Amlogic S905, because with these Boxes some HD Channels are not working.
Allwinner shows a clear good picture.