I tried to update my tomtom with didn't go to well. It wouldn't let me open any of my maps.
Followed support advice on the site, telling me to do a manual backup and to format my tomtom. Done that. Then it said to reinstall software. This is the fun part. I connect my device to my computer expecting tomtom desktop software to read my device so i can update it. But now tomtom home can not read my tomtom. But my computer see's it as a drive.
Best answer by dhn