I need to downgrade my iPod Touch from 1.1.3 to 1.1.1 but when i try it brings up an error saying "The iPod cannot be restored. An unknown error occured." After a few more errors, i have restored it and got it back up to version 1.1.3 and working again. What can i do to downgrade to 1.1.1 and therefore jailbreak it again. I'm using windows at the minute if that information is helpful.