I just purchased a used 9500i. It seemed to work ok. All functions seemed to be operational. Today, I registered the unit on the Escortradar website and downloaded the Detector Tools software. When I powered my detector and connected it to my laptop, the program connected to the 9500i. A moment later, the program stated it couldn' connect to the detector. The display still read USB, and no buttons worked. I waited a few minutes, but nothing. The only thing that worked, was to disconnect the power. The 9500i powered/cycled normally, but the GPS indicator just blinks. Before, it always acquired a signal within a few seconds. Each time I try to connect to the 9500i with the Detector Tools program, it just gets stuck on USB, and locks up. I tried a factory default reset, which did "reset" everything, but the GPS wont lock onto a signal. Any suggestions???