A guy at school is paying me to jailbreak an iPhone 3G he got, so I thought, why not? Should be easy! Turns out I was wrong, though... I ran redsn0w on the phone, and it said it worked fine, but when it completed it got stuck on a black screen with a white box in the top left corner for about 10 minutes, so I held down the home and power buttons to do a hard reset, now the phone is stuck on the Apple logo and won't boot. Umm, help?