Recently brought an XC60 2019 from the US to Europe.
Map update was no problem, you can do it yourself, all you need is an 64gb USB stick and download the Europe Map region from Volvos webpage.
This also activates the European RSI (Road Sign Information) in the dash.
Basically last item I'm hoping to fix is the VoC app.
I've located a few European Voc modems at car dismantlers, once I find some time I was thinking to try and swap out the US one with AT&T connectivity for a European one and play around a bit with VIDA to see if any programming goes through..
Fun fact, at one point, the modem somehow was able to connect to the network (guess AT&T had some network glitch and breifly allowed roaming?!) and the VoC app updated the cars location to Finland..
Also, I spoke with a few dealerships, who had no idea if a modem swap between regions is possible.
From Volvo Cars I heard it in theory should be possible, but not worth the money (4-5k€), just not sure what all parts they would need to swap out to get to those amounts...