I updated the SD card with the latest Europe maps and GPS updates using TomTom Home yesterday. Now, after inserting the SD card into my satnav, I get an hourglass then splashscreen. After a pause it goes back to hourglass then splashscreen. This repeats every couple of minutes. So the unit never actually starts up now. Please can you tell me how to resolve this, as I am paying for live updates and map updates.