TomTom start 20

Hello everybody,

I'm new to the forum so I hope this question is asked in the right place!
The forum is really great and I learn a lot of things, thanks!!

I've got a tomtom start with map version v900 but I really would love to instal the newest version of the map of west europe.
How can I instal and download the right version, because with this tomtom I need to use TomTom MyDrive Connect on a Mac OSX.

Hope someone can help me out.

Thank you so much
Jeroen from Amsterdam-Netherlands