The DVD is an original from BMW but I might get them to swap it just in case.

I haven't had a chance yet to upgrade the OS and I must say I'm slightly nervous as I just got the car and haven't done that sort of thing before.

Sorry if this sounds like a stupid question but is V27.1 an official release yet and would I void my warranty if I upgrade? In fact since I still have the BMW used car warranty will they upgrade it for me?

I'm beginning to get the feeling the comms pack in my car is a bit suspect as the radio unit has already failed. I got that replaced though and I'm happy to say I ended up with the Dynamic Routing option as a result!!

I was hoping there would be an easy fix - maybe the OS is the best option. Otherwise, I guess I'll have to go back to BMW and try to explain to them what the problem is based on what you're all saying. So far they've not been much help.

Thanks for the advice.