Error Code 21 with iPod Touch
Hello, I recently registered my iPod Touch's UDID, and of course tried out iOS 7. But wanting to go back to iOS 6 for stability I restored to the ipsw, but when I did it went into a recovery loop, so since iTunes didn't seem to be able to fix it I used redsn0w to get out of the loop. But now with iOS 7 beta 6, which is supposed to be more stable, I figured I'd give it another chance and upgrade again. But, whether I try to restore into iOS 7 or do an upgrade, it gives me and error code 21 and goes into that recovery loop. Just for clarification I have an iPod Touch 5th generation, windows 7 ultimate, avast antivirus (error code 21 supposedly is related to anitvirus), and the most recent iTunes as of right now. Any help or ideas is appreciated, thanks!
iPod touch, iOS 6.1.3, UDID is registered