OK, I'm lazy. I've seen how to find the version number of the radio/audio system and the 'secert' page of the Nav system, but I can't find them now. Could somebody point me in the right direction.

Might I suggest that this is something that could go in the FAQ section.

Thanks

 

Here is the radio info:

To find the version of the firmware on the radio:
power on
press and hold the text and preset 1 buttons at the same time.
(start pressing the text button slightly before the preset 1 button)
The firmware version will come up in the display