Shane, no, they didnt mess with the kernel on this one. The Bluetooth stack and menu are fully accessible in the OS. I am already running GTX's custom alpha rom and I did ask him first before posting here. I'm certain its a problem with the ALP App. I'm fully aware that Joying is useless, this isnt my first head unit from them, I had the previous MTCD ones with the RK3188 and they were junk.

Can you elaborate on this? I'm not sure what yoiu meant by "ALP did work", On what hardware/Rom?
I have not tried it on my unit for a little bit, but I think Joyless Auto messed with the kernel to prevent Bluetooth devices (Very recently) but ALP did work.