see http://www.cnx-software.com/2017/04/28/24-sunvell-r69-android-4-4-tv-box-is-powered-by-allwinner-h2-processor/
This device boots from uSD with Ubuntu desktop – legacy kernel 5.30 for OrangePi One and RetrOrangePi-3.0.1.Orangepione.img. It didn't boot after initial setting and reboot command/automatic reboot (I don't know why yet, but it should boot and resize fs). It looks it somehow breaks filesystem on uSD card (and I don't have different uSD card to test it).
Ether
Looks like that there is a new board version of this TV Box and unfortunately the Armbian images existing for R69 didn´t work for me.
I have tested the images from Google Drive: Armbian 5.59 and 5.46 without success, the same for RetroOrangePi R69 image.
I already change SD-Card and power supply, but since this setup works for old R69/PCB version (I have both) I believe that the problem is related with boot process (uboot, fex config, kernel, etc) or other hardware configuration