IPod Touch 2.2.1; trying to restore to 1.1.4; getting error (20)?

I got my iPod winpwned and when i try to go into DFU mode i dont get the ipod logo with the cord, i get a picture that says "pwnage" and in the bottom right corner it says trait. i want to restore so i can take it back to the store and not void the warranty. what firmware should i restore to or how do i do it, HELP!!!! my itune version is 7.5.