Cheers mate, ive only just seen your reply here. Ive actually managed to update to V32 now with a custom splash (the M symbol on black background). It hasnt fixed the intermittent nav, so im guessing it must be a laser issue, ive just been reading a thread on here on replacing the laser, so ill probably give that a go.

As an aside, the V32 that i upgraded to didnt have night mode, cameras or postcode search. Should these have been on the upgrade as standard?

EDIT: ive just sent you a PM with similar questions. doh!

Thanks anyway.