iPod touch iPod 4g ios 6.1/6.1.2 help (cydia) mess up

[Tact1cZ]

hey everyone, ok so i was watching a unjailbreaking tutorial that told me i could uninstall cydia via removal of "cydia installer" so for some reason i thought that if i remove EVERYTHING in cydia(all the packages), it would completely un jailbreak it (stupid me), and now the ipod 4g ios 6.1 (unknown of its jailbreak status) wont turn on...it will launch the apple logo for about 7 seconds and the turn off and then repeats the cycle over and over...i am able the put it in dfu mode but i get an error from itunes saying "error 1600" and when i try to restore with redsn0w i get an error saying key(s).plist is missing...please help, im not a newbie at jailbreaks and stuff but this ipod 4g, i bought it off a friend perfectly working about 1 week and 1/2 ago...please help me, thanks in advance

~Tact1cZ

Edit: Plleeaassee... Anyone...Any Help?