I currently own several Sony Products.

MRZ700 minidisc

NWZ-A829

CMT-BX5BT

My question is this.

I have recently been using the bluetooth capability on the NWZ-A829 to connect to the CMT-BX5BT.  I am not able to use the volume control once the connection is established with the CMT....

Is there a Firmware update for the NWZ-A829 that will update the a2dp Bluetooth capabilities? 

I realize that this device is 12 years old now but I would really like to keep this device in service.  

I can easily use my samsung galaxy S II Epic Touch to connect and it works great.  but I love this little sony when I just want movie or music. 

I hope someone from Sony is listening.   I hope they have not given up on updating the firmware capabilities. 

Mike.