How to tell if Navigation Map is Updated
 

I just purchased a 2015 RX 350 CPO and as part of the purchase I asked that the Navigation map be updated and when the car was delivered I was told the map had been updated. When I check the map information screen it says "Map version 21-1817 (2018-06-1) and then it says "update cancelled". Does anyone know what this means? Is map version 21-1817 the latest version? I just want to make sure that map was updated as promised. Thank you.