So i used redsn0w to jailbreak yesterday and i installed cydia and i got the white icon and safari not working and whatnot, and i know you need to go back and then boot tethered, but when i try to boot tethered, i get the pineapple and then its replaced by the normal apple logo, which is followed by the loading circle then again the apple logo, and it just goes on like that for ever. i plugged it in and just let it do that and its been at it for like 5 hours now. I've tried resetting to factory settings then rejailbreaking but that didn't work... what else is there to do??