2460LMT unable to put europe maps on american 2460.
I have a nuvi 2460 lmt Garmin which has the "American CN North American 2018.30 ALL" fitted under my maps. I obtained from Garmin, "City Navigator Europe NT" which they say is "2018.20 Europe" and used Garmin express to download it, which indicates I have to put it onto a 16Gb 10 SD card in the 2460. When it was downloaded, which took 13 hours, the Europe maps did not appear on the 2460. the SD card shows showed "D0323350A.gma 1/12/2017 3KB, D0323350A . img 30/11/2017 3851072KB, D0323350A .uni 01/12/2017 1KB." I contacted Garmin Uk who asked me to redo the above twice and now they say it cannot be done and I must have a fault in my GPS. If I pan over to Newyork I can see all the streets etc. The 2460 picks up my uk position correctly and give me lat/long coord correctly. The 2460 moves around in my car over a very crude uk map with no details. It seems such a shame to bin a perfectly good unit just because Garmin cannot tell me how to do it. I would be most greatful if one of your gurus can tell me whats wrong.