My friend came up to me, saying that he couldn't turn on his iPod. I said 'No big deal, I can fix it' However, when i came home and tried to boot it using redtool, it would show the apple logo, and itunes would detect it, as it normally would. Being able to sync and everything. However, the iPod Touch won't boot. It just remains at the apple logo. How do i fix this without restoring?