I've seen lots of info on updating the GPS from Mapsource, problem is I have received a replacment 660 from Garmin and it's got a newer map than Mapsource has on the PC.
Check you myGarmin account, they should have added the new unlock code and mapping. This should enable you to download it to your PC. If this isn't the case I suggest that you give them a ring and explain, they should then set it up for you.
Check you myGarmin account, they should have added the new unlock code and mapping. This should enable you to download it to your PC. If this isn't the case I suggest that you give them a ring and explain, they should then set it up for you.