Having a look around another user (ephumuris) had the same error (-1035) when trying to do the cios_fix. He ignored this (posts 4, 10, 15, 17 in http://gbatemp.net/index.php?showtopic=119216&st=0 ) and carried on with the downgrade. His machine was a 3.3e
I was just about to risk this too on...