i tried redsn0w and it worked but then i accidently clicked restore old settings back to iPod then it just became black screen and wouldnt turn on. now i want to restore it back to it's factory settings but when i put it in DFU mode and plug it to iTunes then i click restore it gives me this message. Software for this iPod is currently not available. Make sure you have the latest version of iTunes and try again. so i went and downlaoded the new iTunes 8 and then it gave me the same message. What do i do?