2017-07-11, 00:38
Budget s912 devices litke the KM8-Pro, BB2 and some others manufactured by VideoStrong work with full passthrough capabilites if you flash the RikoMagic MK22 Android 7.1 firmware and a custom update (available on 4pda.ru). I've only flashed it to a KM8-Pro but a number of their boxes use the same PCB and should work as well.