Hi everyone - am a newbie to posting so please bear with it! I'm having problems with my Mk3 nav unit and have spent a good few hours reading through the lists here but everything I try doesn't seem to work. The problem is I tried to upgrade from V17 to V32 - duh! I now know V32 is for the mk4 and I should have just used V22. Anyway, when I put the CD in it started the upgrade and then went blank. After an hour I switched it off and on again and I now have a system that does the split screen but the fonts look rubbish and most importantly the GPS option has completely disappeared (even if I put the original (2004) BMW Sat Nav CD in). I've since burnt 4 different CD's with V22 and V27 (burnt at 1 speed) but the device doesn't detect the CD (I even tried the CD I originally used and it doesn't detect that). I think (maybe wrongly) that if I can get it to downgrade to V22 etc I'll be OK as it doesn't recognise any of the CD's I'm a bit stuck! Any help - suggestions much appreciated. Thanks Bob