I was jailbroken with version 3.0 on my ipod touch 2g, and finally decided to go 3.1 jailbroken. I thought that I would need to upgrade to 3.1 first before I jailbroke it. I'm now reading that you have to already be jailbroken if you wanted to go jailbroken with 3.1.2, so I need to downgrade to 3.0 from 3.1.2. I downloaded the 3.0 firmware when I option-restore in iTunes (9.0.2) I got an error (I think error 20, I could be wrong). How do I downgrade?