Default [Q] Adding more Bluetooth Profiles?

Hey there, i just found out, that our beloved Xperia Z1 doesn't have many Bluetooth Profiles but they should be supported with Android 4.3.

Is there any way to add new Bluetooth Profiles with an or even an apk?

In my case i'm on 14.2.A.0.290 and it is rooted but not unlocked and i really would love to have atleast avcrp on my XZ1 so that i can get the Track Information to my Car via Bluetooth.

Best regards
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