Apologies for the delay in replying.Doh, so that's not very encouraging!
Naranja, any further feedback? Does it definitely make a difference?
Is this now logged as a warranty issue, i.e. will be fixed in an agreed way, free of charge?
This 'fix' has much improved the hands-free, everyone says its better. Any problems I have seem to be related to reception now (voice 'echo' being the main one).
It is recorded at the Nissan tech dept which is available to all HPC's and the fix is under warranty so, yes, it's free.