I can confirm that the Tanix X4 is working via SD-card and toothpick method.
Just tested the Box for 25 minutes and everything worked fine like on my TX3 mini.
Shutdown, reboot, playback, connecting to my samba server… everything worked.
I took the same dtb as superceleron.
I am only using Ethernet so I can say, that Ethernet also is working without problems.
The next couple of days I gonna test reboot to internal Android and how it is doing when switching off WIFI on Android… (heard that some people had problems with disabled WIFI and Ehternet)