The list of affected devices can be viewed here. This means older devices don’t have the ability to store much more in terms of new updates.
The company explains the size of a European map has grown by 5GB (from 1.6GB to 6.5GB) since 2015. “It has become clear that some of our older generation navigation devices do not have sufficient resources to run the newest maps and software.” “Your maps will become out-of-date and as such navigation will be less accurate,” TomTom told customers in an email (via BBC). Once active subscriptions have expired, the models won’t become completely obsolete, but owners won’t receive the most current information.