Bluetooth services, depend on hardware ? software ? both ?

Question:
Bluetooth services, depend on hardware ? software ? both ?
Just to understand what's going on with my Sony FE590P, I would like to know if the services a bluetooth adapter provides depend on the adapter itself, on the drivers, on the software which uses them, or any combination ?
When Sony tells me that my bluetooth adapter does not support A2DP, is there anything I can do (aside from using an external Bluetooth USB adapter) to change that ?
To present the whole picture, I am trying (unsuccessfully up to know) to use headsets with my internal bluetooth adapter.
Answer:
Re: Bluetooth services, depend on hardware ? software ? both ?
If the hardware does not support A2DP and a driver update does not add function for it. You have no choice except to use a external.
Answer:
Re: Bluetooth services, depend on hardware ? software ? both ?
just to clarify, a driver update may or may not add function for it ? thanks
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