Can't Unlock Nokia 3200 ???? Help please

[hasssan1]

I have Nokia 3200 AT&T in us. it's RH-31 and i tried to unlocke it with both stand alone and web cal. i used Asic2 and V2 and both codes ( 7 and 1 ) give me can't undo error ? any one knows how to unlock this phone? Please let me know.

Thanks