just to let you know it works perfectly out-of-the-box with my Blackview Crown (MTK) and Opel Astra J:
Model: Blackview Crown
OS: Android 4.4.2, Build G807_D1_H1_Blackview_V1.0_20141015
Baseband: MOLY.WR8.W1315.MD.WG.MP.V35, 2014/05/28 11:53
Rooted using "KingoRoot" (SuperSU 2.01 - currently not updateable!).
Until now no occasional "Bluetooth hangs" like on my Samsung Galaxy S2/CM11 (needed to be switched off & on after rSAP disconnect), also no hangs of the GSM/Bluetooth module of my Opel Astra J so far. It just, plain works.
Keep up the great work!