My unit is about 3 years old it is receive GPS signals less than 75% of the time lately. It seems to have gotten worse. I called Escort awhile back and they suggested updating my software, which i did. So do these things go bad? I know all electronics do. I am sure Escort will sell just the GPS module if I need one (which sounds like I do). Any experience with this? Any estimate for one of these? I keep forgetting to call escort during business hours to ind out. Thanks for any help.