I have a 2007 X3, with a MKIV navigation system.

When I look at the system display, it shows version 4-1/30, which I know is quite a few versions old - currently at 4-1/100, I think.

I have burned several copies of the V32 upgrade and also had a couple from euro sat nav. None are registered by my system.

When I load the update disc, the only message I get is "No disc, please insert a navigation CD/DVD".

I've tried all combinations I could find of loading the software - engine on; engine off; door open; ignition in position 1; but nothing works.

I thought it might be an issue with the laser, but I am running a copy of a map and it is read without problems. Before I tried to do the update, it was running an original map.

Any thoughts apreciated