I just bought a KC BX-411 Android 6.0 head unit on aliexpress, I found the manufacturer with the name , it is a KC Cartech product www_kccartech_com/eacp_view.asp?id=226 , I’m very happy with it except that I can not pair my OBDLink LX OBD adapter.
No problem with bluetooth to connect a phone and it works, the only problem is for the obd adapter, only one chinese model of a friend is working and it have to be named "OBDII" and have MAC Address (identity card) : AA:BB:CC:11:22:33 , it is the generic chinese typical OBD but the problem is that mine has a different name and obviously another MAC Address and the car radio can't pair it (see video) , It seems that the firmware of the car radio is locked to use only a generic chinese "OBDII" with MAC Address : AA:BB:CC:11:22:33. It has been confirmed by a friend who have a android car radio too with same problem and had to replace the original firmware by a sda developer firmware update to solve the problem.
Do you have a firmware update to upload in the car radio to replace mine to be able to connect any OBD adapter ?
ANTUTU Benchemark v6.2.7 (Score 19695):
CPU Allwinner T3 Cortext A7 Quad Core 1.2GHz
RAM DDR3 1GB INAND 16GB
Android 6.0.1 (32bits) SDK 23
Renderer Mali-400 MP2
GPU OpenGL ES 2.0
screen 800x480 (240dpi)