Many thanks for your quick reply.
However your answer has raised another question in my mind. If I don't need 3.0.52, does that mean that my other 3 units that have 3.0.52 will not work properly in some respects? If so how do I go back to 3.0.44?
Fortunately I don't use iTunes, but I do sometimes listen to BBC streams. However being UK based I can also get most of them via FM or DAB.