Default Bluez 5 on Android 4.4

I am porting CM11 on Xperia U(P/Go/Sola). Since the switch by Google from Bluez to Bluedroid the bluetooth was no working. Recently the Bluez team release a version for repleace Bluedroid. Currently I have a full working driver + kernel bluetooth subsystem + Bluez (v 5.12). All the Bluez command line tools are working but I can not set Android in order to recognize that there is a bluetooth device and it is working. Probably It is due to a HAL missconfiguration. Some of you have experience in this sense? Can help me? Can give me some reference about that (i.e. guides or ROMs that replace bluedroid with bluez sucessfully) ?