to be able to shutdown , you need to reflash the box
It has been tested on the X8-H with success.
I need both Android and LibreELEC, I flashed my X8-H with minix_x8_x8plus_x8_h_newbootloader_FW9.img, but it seems, that in this firmware video acceleration does not work.
YouTube, Vanced, SPMC & MX Player do not play video with HW acceleration. If I switch decoder in MX Player to SW decoder, video plays.
In official firmware X8_X8PLUS_X8H_FW009.img everything works.