should work, you would have the nav button the left with no globe button the right? you can tell from the volvo download site here
https://www.volvocars.com/uk/support/downloads/maps
I would say 30 minutes is optimistic to do it mind, personally I think its worth doing if your keeping the car! we normally budget an hour.
Have you had the car from new? if not the last owner might of had it done... you can always download the maps yourself and try it, if it asks for a key then you need to get the update done first