I have an AT&T Pre3 2.2.4 which has had trouble staying connected to my new home WiFi router. It keeps disconnecting. The phone's WiFi is fine at work and other WiFi hotspots, no lost connections. Just at home. I ran a quicktest on the Pre 3 and it said there was an issue with someof the hardware: Code 20 with the Modem. Anyone know what that means?