I recently took ownership of a B & O Serenata, however i have one big problem. I also own a BMW car with bluetooth embedded in the car. I can link in the Serenata with the car but the phone turns itself off and back on after approximately a minute of link up time. It then links in again and goes through the process again off turning itself off and on. The whole phone reboots itself. The car's bluetooth works fine with all other bluetooth equipment.  The phone also works ok with other bluetooth devices.  The phone is authorized on the bluetooth menu and i can see all my numbers and use the dial up feature but its just the phone doing its own thing that is bugging the hell out of me.

 I have received a phone call during this minute period and the phone worked fine until the call was ended. Does anybody have any ideas or suggestions as to how i can solve this problem.

My car is a BMW 3 Series year 2007 and if so is there a firmware update available for the phone to solve this problem as i do not want to get rid of the phone as i want desperately to keep it.

I look forward to a favorably reply Beoworld.

Regards

Carl,

The problem you have is one of the biggest issues in the "Bluetooth world", namely compatability.

Like most car manufacturers which use Bluetooth in their cars BMW have a list of supported phone which you can review HERE and you will not find the Serenata listed.

So, why do we have these problems, well really because there were no real standards set down in the beginning and enforced by Ericsson who invented the technology. He's the basic overview:-

Early versions were fraught with problems and the 1Mbit/s v1.0 release was rapidly updated to v1.1 which overcame many of the early problems. This was followed up by v1.2 in 2003 which helped reduce co-channel interference from non-Bluetooth wireless technologies such as Wi-Fi.

• In 2004, V2.0 + Enhanced Data Rate (EDR) was released that offered higher data rates up to 3Mbit/s and reduced power consumption.
• Shortly followed by V2.1 + Enhanced Data Rate (EDR) was released in August 2007 which offered a number of enhancements including improved mechanism for pairing devices.
• The next version of Bluetooth is v3.0 which will be based on ultra-wideband (UWB) wireless technology. This is called high speed Bluetooth.
• In June 2007 at Ultra Low Power Bluetooth (ULB) standard was announced.
  

So, the latest version is really version 3.0 which most products designed since 2007 tend to comply with, so what about your mobile phone, well that complies with version 1.2 Class 2 which defines the power output (There are 3 classes)

There are also profiling standards associated with Bluetooth and the Serenata complies with the following profiles:-

• Generic Access
• Service Discovery Application
• Headset
• Hands Free
• Generic Object Exchange (OBEX) which means it can read the address boo

My guess is that BMW conform to version 2.0

There is no Serenata software update which will address this issue.

Thanks Keith its not what i wanted to hear but now i have something to go on to try and find a working solution to this problem.   I want to keep both the phone and the Car so i have to find a workaround.

If anybody has a way to overcome this please feel free to help.

Keith thanks once again for your knowledge and your ever growing brain.

Keith according to a Samsung website the phone has version v2.0 with A2DP.  If that is so why would it cause a reboot of the phone?

That may well be true for the Samsung version, but the B&O version is 1.2

Cheers keith, i am still gonna forge ahead and try to get it working somehow. 

Wish me luck.

Regards