i have tried everything and all i get is error messages. the first one is the session can not be started with ipod. so i go to dfu mode which says error 3194. so i try to downgrade to 3.1.2 and i get the message error 1604. i also tried changing the host files and turning off my firewall. my ipod is jailbroken i think but cydia is grayed out. i have a ipod touch 2gen model mb528ll.