Just downloaded this new application. Make sure when you disconnect the first time from tom tom home and it asks you do you want to connect to computer you say yes. It needs this second connection to install this download. You should get this warning after you download the first time. As far as corrections go, I have the 920 and I see it increased the sound slightly. Now I can put the sound at 95% and get good sound in my car. Thanks tom tom. i do not see any other corrections. If any users see any other corrections please let me know.