Maps not loading following update cannot use the map

Stephen M
Stephen M Registered Users Posts: 4
Apprentice Traveler
edited March 2019 in Built in car navigation
I have just updated SD due to WNRO bug letter this morning,
Map (Europe 100655) not loading when back in car
TomTom Home says all up to date and map shown on device @ E:\Europe 965.7251
Not sure what to do next
Please hHelp