I have a Tom Tome Rider 400, want to update maps as have 950.6566 which I believe is 5 years old, it

Hi Thanks for the information, sorry I didn't put enough detail in my original post.
I've connected to my-drive and tried to download a map update, some icons have changed but the map is still the original from 5 years ago. Details also say that my device is up to date, any input greatly appreciated