I have an ipod touch 3rd gen 8gb mc and i want to downgrade to 4.0 from 4.1 since greenp0ison and limera1n doesn't work. I have my shsh blobs saves on cydia but I don't know how to downgrade using them. can someone help, thanks. oh yeah, and the same with an iphone 3g 8gb. I have my shsh blobs for 4.0 saves for that on too.