I have been trying to downgrade the phone i bought after it was on 1.1.1 and had some charging problems, and Repair Needed on screen. I downgraded to 1.0.2 but got an error message when it was done. I tryed to run app tabb but that only got to stage 2, so i downgraded it again, and got the same 1604 error. I now just have a blank screen, and cant put it it recovery mode, so itunes con not detect it.

Please help, or is it bricked??