Here's my problem today i plugged in my Iphone to charge and my radio rebooted itself. It gets to the menu screen and gets stuck there.The system starting message stays up on the screen. I can go to radio and listen to it but it will reboot again after a few minutes. Only thing I've done to the unit is bypass the parking brake and menu to use all the functions without being stopped. I've seen a lot of posts about service mode and a 3.01 firmware but have yet to find the files to get there and how to do it. Is this a firmware issue or hardware problem and is there a way to tell? Help please i d