Mk4 Nav - how easy to screw up?

[bigash]

Hi guys, my 1st post here and its a sorry tale!

Tried to udgrade to V.31/32 as discussed in the sticky thread, downloaded RAR file and unzipped into the image file, used Nero to burn a copy onto CD (set to mode 2 etc as instructions in sticky thread) checked disc and had the 13 folders/41 files etc.

Went to car, opened drivers door and boot, waited to red light light to stop flashing then had to press eject 3 times to get MAP disc out, turned key position 1 then inserted Update CD, NAV screen goes blank, then just stays blank, leave for 15 mins but nothing, have now noticed that the red power light on NAV unit is no longer on and disc is just spinning for 10seconds then briefly stopping then spinning upagain for 10 seconds like its trying to find something but cant, this just continues until it finally lets you eject the disc!

NAV screen is now blue with everything working as normal except no navigation command.

I have tried disconnecting both battery and navigation unit but no luck!

I have also tried burning off an unmoddified Version 27 but the unit just does as before, disc goes in, no red power light and disc just spins for 10 seconds, stops breifly then spins for 10 seconds etc etc.

So just how easy are these units to fry?

Cheers guys!

Stew