iPhone thinks there is an accessory plugged in that is not compatible with my phone. I have resprung, rebooted and never used any accessories with my phone. plug into a charge and it works fine but unplug it and instantly it thinks there is an accessory in it. It is a reburbed one has my iphone 3gs new bootrom overheated and they sent me a refurm with older bootrom. any one help please?