Just got my Tanix X4 today and it all works fine in Android 11. Configured an ultrafast 32GB SD card with CoreELEC 19.5 rc2 and all booted fine into CoreELEC but only using the standard generic SC2 dtb. If I try the 1G LAN dtb it does not boot. I tried both as there is ambiguity as to whether this new Tanix X4 box has a Gigabit LAN port or a standard 100Mb one as you see some listings saying its 1Gb (1000Mb) and some saying 100Mb. Anyway it must be only 100Mb as the 1Gb DTB will not work at all.
So for feed back to others here asking I can confirm that I have NO Bluetooth device available, NO WiFi available and NO VFD files I can find that work for the front panel display (was kind of hoping the Tanix TX5 Deluxe S905X3 working VFD.conf file would work wihtthe X4 but alas it does not). I have not tested the SPF port as have not the means to do so.
I appreciate this is a new model box and we only just have the first compatible CoreELEC firmnware for it, so I will have to be patient. I do not have the up to date expertise to be able to make a VFD file but I see others here are already working on it so appreciate what they are doing. Anyway I can live without Bluetooth and always use an Ethernet LAN connection with my main streaming box via my TV cabinet’s Gigabit LAN Switch. So I am patient to wait for the WiFi and Bluetooth drivers to become available here.
Many thanks to all the CoreELEC developers for the new rc2 update which makes the X4 boxes now available for all us grateful CoreELEC users.