I'd think a factory image on a custom rom would only cause problems. Perhaps you could unzip the custom rom zip, and find the system image to reflash. Either that, or its likely a known bug on that rom. What rom are you using, and is it a nightly?

Confirmed II

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@ Gnoise: Thx: for your good How-To!

This solution works for me, too!

Hi All,

i have similar problem, but BT was working more or less fine. Only hang up few times. But main problem is that i could not use BT in my car any more. Phone connecting to car with no problem, and i could receive calls from anybody, but as only i try to call from phone, not from car HF system, i get problems. While phone dialing, it happens in background mode, car audio system working, but as only recipient answer the call, Gnex turning his internal speaker, but not the car's HF system, like it was on 4.0.4 - 4.1.2. I flashed custom rom - the same problem, then i download and flash stock rom again, and nothing happens. Does it helps if i now reflesh system.img
p.s.
I asking because i gave Gnex to the warranty service (with all above mentioned explanation) and they gave me back Gnex with 4.0.4 and claim them for that. now i don't want to flash 4.2.1 until they response.

thank you

Originally Posted by xoxoJI

Hi All,

i have similar problem, but BT was working more or less fine. Only hang up few times. But main problem is that i could not use BT in my car any more. Phone connecting to car with no problem, and i could receive calls from anybody, but as only i try to call from phone, not from car HF system, i get problems. While phone dialing, it happens in background mode, car audio system working, but as only recipient answer the call, Gnex turning his internal speaker, but not the car's HF system, like it was on 4.0.4 - 4.1.2. I flashed custom rom - the same problem, then i download and flash stock rom again, and nothing happens. Does it helps if i now reflesh system.img

thank you

I have the exact same issue with my car kit since 4.2.1 and am about to reflash my system.img... I'll let you know what the results are.

I actually re-imaged the system.img and it seems a bit better now... It still loses it's connection after a while and it could be after 2 minutes or after 60 minutes. Once the connection is flaky or broken, I cannot connect to my carkit anymore and the weird things is, no other phone can connect until i completely reset my carkit. It seems like it's messing up with either communication or whatever as it affects the way my carkit behaves afterwards.

fix

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Originally Posted by BtM909

I actually re-imaged the system.img and it seems a bit better now... It still loses it's connection after a while and it could be after 2 minutes or after 60 minutes. Once the connection is flaky or broken, I cannot connect to my carkit anymore and the weird things is, no other phone can connect until i completely reset my carkit. It seems like it's messing up with either communication or whatever as it affects the way my carkit behaves afterwards.

Try the following. It worked to fix my crappy 4.2 Bluetooth sound quality. I did the manual install. Don't forget to change permissions.

http:// http://forum.xda-developers....php?p=38973705

---------- Post added at 03:55 AM ---------- Previous post was at 03:47 AM ----------

Try this. I had the same issue and this worked. Sound quality is great now.

http://forum.xda-developers.com/show...php?p=38973705