What am I doing wrong? It says 'Map Detail Locked' in the bottom right hand corner of the screen. Have connected Zumo660 and unlocked maps successfully. I can use Mapsource but it is only showing basic details. What am I missing? 


Is the version of Mapsource on your PC the same as that on the Zumo? If you have updated Mapsource on your Zumo recently you will also need to download the update to your PC. The same version must be on both. This should solve the problem.
Polecat, in the View menu, map detail, can you change the map detail?
(Garmin Support only open mon-fri so will maybe have to call them next week).make sure you download the update to 'gps and computer' and not just the gps on it's own.
Wot he said. On the download, there's a box to tick to download the maps to both the GPS and the computer - default is GPS only

I must be stupid because I can't find any box to tick. It keeps telling me that maps have successfully unlocked for the device but nothing about the pc![]()
From what I recall, and it may have changed, there's a button at bottom left of one of the screens you go though early on during the update process that says something like 'install options'. It's not blatantly obvious and without clicking it and selecting to install to the PC and GPS, as said above, it will just update the GPS only.
Plenty of people just click 'Next' > 'Next' > 'Next' > 'Next' etc. when doing an install like this without reading each screen.
if you download and use Basecamp, the map on your Zumo will be visible on the PC (as long as the Zumo is connected.
Should previous device owners supply the unlock code to the new owners? I read that maps are device specific. Would that be the answer?