hi Have 2009 Touran with RNS 510 satnav.
I have tried to update the maps using a dodgy DVD from E-Bay (lesson learned?)
The unit read dvd and down loaded the maps. and went through the installation but the installation never reached 100% even after leaving it for hours.
the unit is asking for the Navigation CD, when i insert it it goes through the same routine.
Is there some way i can get the unit to revert back to original installation of old maps?
I have the original V3 DVD
Sat nav is inoperable

Thanks
Robert