I am jailbreaking my dads iphone 3g on firmware 3.0. Redsn0w quit on my mac unexpectedly. I rebooted the iphone just fine and then tried again and it went through all the uploading ramdisk stuff on my mac. but nothing on the iphone. Just the black screen like right after the iphone logo disappears on powerup. It will not come out of recovery mode and i have tried to run redsn0w with the same results again.