I purchased a Tom-tom Via 1535 TM GPS from Best Buy for $249 plus sales taxes. I love the GPS, so when I finally getting around to attaching it with the computer to take advantage of the Lifetime Maps offer which was part of the purchase price, I am unable to. I download the version of Mac software and I have no option available to input my maps code to download the latest maps. I also can't download the latest traffic camera database, nor can I back up the data on the unit. All I was able to do was load a POI file, but can't... read full review »