So i messed up trying to update and jailbreak 1.1.2 so I need to downgrade. I am using the dev teams method and zip file they provided. I began downgrading and it finished with the error 1015 which is supposed to happen. I opened jailbreak.jar and booted from recovery, but the progress bar does not move i left it on all night. Can someone tell me what i've missed? thanks so much.