My display out is not displaying anything only screen. I've tried almost every cable in existence including and currently the OEM component cables from Apple but still cannot get anything to display on the television. I've switched to multiple televisions all HD and switched back and forth to and from PAL to NDSC with nothing. My phone will not load when i restart it if any cable is plugged in. I have the iPhone 4 running 4.2.1 OS. Any solutions? I've tried TV Mirror Out as well and still cannot get an image on the screen of any kind. My iPod also seems to crash when I'm using any of these programs. The only thing I have not tried that I can think of is rejailbreaking the phone. I'm under the impression that this is a problem with OS 4.2.1 and not the phone but I don't know.