LG G3 bluetooth problem with older car - G3 Q&A, Help & Troubleshooting

Hi,
I tried connecting my bluetooth with my car (2003, bmw e46), the pairing works, but it keeps disconnecting and I can't receive any calls thru my car.
From what I've read, there is an issue with the bluetooth stack that was changed in android 4.2? Can I patch/edit it somehow so it can work?
Found a similar guide here (for the same car), but didn't manage to make the edits.
http://forum.xda-developers.com/android/help/qa-lollipop-bmw-e46-carkit-bluetooth-t3045523

Finally managed to apply the fix in the url above and works perfectly.

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Hello Everyone,
I have a Note 3 Neo 7500Q ( Turkey Version). I am overall satisfied with the phone, but when I try to connect to my multimedia car kit via bluetooth, I have problems. It pairs up with the kit, but neither my nor the other parts voice is transmitted. I tried to every way without luck. Does anyon else has or had the same problem? Is there a way to overcome this issue? All kinds of help is appriciated.
I use the BT car kit all the time, with no issues whatsoever. My unit is a Parrot MK9200 or something. It is 4 years old, can't remember the exact model number. Phone calls, music streaming etc. works fine.
Here are a few suggestions you might try:
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2) When the phone pairs with the car the first time, it asks for permisson to access the Phone book, logs etc. Mark "Always yes". That might be your problem.

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I updated my rom to "Johny DJ" MicroG apps 5.1.1, everything is working except bluetooth seems a bit strange, on the Bluetooth app I cannot see any connected devices, or I cannot search for any devices, but I can connect to it from my phone, if I make a call I can hear it though the car, but the app still does not see the phone, so I cannot search for any contacts.
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