anyone tried the tethered ios5 jb on their iphone 4? i am having problem when redsnow saying exploiting with limerain...it just hangs there and nth happen...

hmm...i keep on getting this 2005 itunes error code...i was trying to get my friends ipad from 4.3.5 to 5.0...and as i know is true that current version is 5.01 and i tried to use iREB to get in to the dfu mode..from there i get the error...if i try to just restore normally from itunes i am getting the 1600 error instead...