Since I'm a sucker for punishment, I also picked up a S912 box, a HONGYU T95Z Plus. I took the DTB file from this post - which was purposely built for fixing some LCD issues on another user's T95Z Plus box. I began using it with my build, and now the LCD panel works, so I know I'm on the right track.
However, the LAN still does not work - I can only get a 169.154.x.x IP address. The Wifi adapter works fine. Some googling suggests this may be an issue with the DTB file. Can anyone help with this? Please let me know which log files to provide, thanks!
EDIT: ifconfig shows that no data is being received, so there's probably a pin mapped incorrectly in the DTB. Can someone show me how to create a modified DTB for this?
eth0 Link encap:Ethernet HWaddr C4:2A:FE:11:83:72
inet addr:169.254.1.118 Bcast:169.254.255.255 Mask:255.255.0.0
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:2081 errors:0 dropped:0 overruns:0 carrier:0
RX bytes:0 (0.0 B) TX bytes:408386 (398.8 KiB)