ok so i had a jailbroken 3gs that was acting strange so i decided to delete all settings and data on settings after that it didnt boot it only showed the apple logo over and over then i did the press sleep/wake button with home then release sleep/wake to dfu mode i did that i got into dfu mode all good but after that when the iphone finishes restoring with itunes its says it has no signal and shows a white cable with itunes on top wether i disconnect it or connect it itunes wont recognize it i really need help thanks in advance