BM53 or 54 Upgrade and Fix. Just got mine done
 

I took a chance and sent my BM53 over to the UK from the USA. I had no right side speakers and narrowed it down to that. I dealt with Baris and he was great. The transaction was good and he was very prompt answering my emails and with my questions. I would recomend him if your looking to fix or update firmware (BM54 only). The address is [email protected]. I now have all 12 speakers working with the DSP. Look him up, he can help.

I'm about to do the same thing. Has anyone done the streaming bluetooth upgrade with him? He has given me the details but I want to know if it's worth it.

I did not do the bluetooth option with him but what I did do works perfectly

+1 for Carphonics' work. Just got my repaired BM53 back in the vehicle last night and it sounds great.

Scott