can l upgrade the bluetooth (factory fitted) to it being A2DP capable?

Thanks

No way Dude!

Here is where you will see BMW does not always incorporate the latest technology into their cars.

Your only option is to have an A2DP unit connected to the Aux-in of the car (if so equipped).

This is also where you will find it is actually easier and cheaper to upgrade a ''less-complicated'' Japanese car which uses a standard DIN sized radio.