After i get the tethered jailbreak, i send the ibss221.dfu, pwn211ibss.txt, ibss221pwn.dfu and crap then i try to restore with the firmware i made. It worked my mine but my friends ipod doesn't want to do it. I try to restore but it says unknown error 2005 and i tried this 5 times by trying different ways like disabling the custom boot logo and stuff but wouldn't work. Anyone have any idea??