Been working on this for 2 full days now...The TomTom online help pages for this DO NOT PROVIDE ENOUGH SUPPORT and TomTom Customer Services (after numerous calls and emails) are equally baffled. Totally unacceptable! It started off with a 'no maps found' error on the Smart Media screen in car. Followed the online help and have tried updating the SD card with new maps (incl any GPS updates). This has been both successful and unsuccessful. Sometimes the Smart system in the car updates with the new maps OK and the maps appear on the screen....but then the disappear again after a short time ('no maps found' error on screen). After other updates the maps just don't appear at all on the Smart Media screen and the car doesn't perform any update. When I put the SD card back into my PC the Smart Media Connect app tells me the SD card is corrupted...but when I do a check in Windows on the drive the SD card is OK with no memory errors. One thing I've noticed is that the SD card is full with no space....so I'm wondering if the card is just unable to take updates and contains bad data...which of course you cannot see or delete from the SD card because they are invisible (some kind of hidden or encrypted file?).
If the SD card is OK then it must be a flaky SD card slot in the car or the TomTom software in the car has a bug and unable to keep a continuous connection with the maps.
Any ideas out there?