HELP How find tom tom model and best map for it?

Hi, tnx a lot for any answer and sorry for my bad english.

I got a tom tom but i don't know his model.

The Tom Tom has one map, Italia.

When i connected this device to my pc, i viewed one folder with same name and into folder was many file like:

Italia-106.meta
Autovelox_IT_TomTom.ov2.dct
Autovelox_IT_TomTom.ov2
ecc...

How i can know the model, the map version and how i can update it?

Thanks in advance.