How to upgrade map on SD-Card of a car navigator?

narke Registered Users Posts: 2
Apprentice Traveler
I have a car (Smart 453) that is using TomTom. I feel that map was outdated. How do I update the map on the SD-Card? Since the car was sale in China, the map is also China map.

Hope someone can help me. My thinking is, if I only upgrade the map, it should be easier to done, when I have success, I may in the next step thinking about how to upgrade the navigator device software, which may be difficult since I think I even not sure if I can connect the device to my computer.

By the way: How do I check how old my current map is?

Thanks a lot.