I got a unlocked 3GS from Craiglist it was jailbroken or something, it was working fine tried with different sim cards and was proper. Left it at night and it got discharged.next day when turned on it locked, it does not turn on and has a screen that has a picture of a USB cable and logo of iTunes and it does not allow to get in. Tried to restore thru iTunes but says iPhone cnt be restored.....any help