I have tried Replicant on the GT-9100 and I am able to use bluetooth and to connect to a Parrot CK-3400 but I am not able to hear any sound. With SFOS 4.4.0.72 I am also able to connect properly to this Car System but it seems as if audio is not routed properly. I am going to try again with CM-12.1 because maybe my previous reply wasn't 100% accurate.