I have a GO 910. When ever I press Car Symbols on TomTom Home it states that my device is not compatible. Last year TomTom support told me if I updated my map I could change the arrorw symbol on the map to something else. I updated my map recently and I still get the same message. I emailed support back and I have been going back and forth with them and still can't get it to work. I have asked them twice to confirm in their lab that I can or cannot do this on a 910 model and have not recieved a reply to that question. Can anyone help? I would like to be able to change the arrow to a car or something else. FYI: I also get the not compatible message when I click on Fuel Prices, Routes, Home Symbol, Buddy Symbol and Favorite Symbol on the Home software.