This video will show you how to fix the most common errors associated when downgrading your iOS. DOWNGRADE AT YOUR OWN RISK! I AM NOT LIABLE IF ANYTHING UNEXPECTED HAPPENS TO YOUR DEVICE. IF YOU ARE HAVING ISSUES DOWNGRADING, YOU WILL HAVE TO RESTORE YOUR DEVICE.
Links:
ALL FIRMWARE DOWNLOADS (IPSW'S) ARE AVAILABLE FROM THIS SITE:
http://www.felixbruns.de/iPod/firmware/
RecBoot:
http://jaxov.com/2010/05/recboot-iphone-recovery-mode/
TinyUmbrella:
http://thefirmwareumbrella.blogspot.com/
Sn0wbreeze:
http://ih8sn0w.com/index.php/welcome.snow
IP Adresses:
74.208.105.171 gs.apple.com
IF THAT DOESN'T WORK, TRY:
74.208.10.249 gs.apple.com
Courtesy :lizards821