My kenwood dnx7320 garmin gps is stuck at the splash screen, rest of the unit works great. I went to kenwood and they said they cant update it. They ask me to take it out n send to them for service, they said its motherboard. May cost $200++. I scoured google and not much is discussed about this model. Does it have the mini usb port at the back? Is it possible to update firmware using a burned cd or install igo? Or a safe boot? Any help appreciated. Thanks!