Any chance to upgrade an integrated CSR

Hi,

I'd be keen to listen to music via a BT headset. Though the vendor of
my recent USB BT dongle stopped supporting it with newer SW the option
replacing it with an up2date model is financially feasable.

The situation gets worse wit the integrated CSR based BT adapter in my
IBM TP R40 notebook. IBM (now lenovo) hasn't offered any (Widcomm)
update or upgrade here neither. I could also buy a new one suspending
the build-in, but that's no too sexy :-/

Is there any way to get the FW of the CSR based model upgraded to 1.2
and supporting SW offering A2DP? The reported revision of the CSR
adapter within the TP is

Manufactuar: CSR
FW Revision: Version 546
HCI Version: BT HCI 1.1
HCI Revison: 0222
LMP Version: BT LMP 1.1
LMP Revision: 0222
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tnx & cheers
Oliver