So, Maybe this should have been on the front page a long time ago, but ah well. I know that most users have already successfully jailbroken without Icy. You should not select Icy to download because it will not work. It is an easy error to fix unless you have a lot of data on your apple device. You will have to restore to fix it. A new redsn0w patch will be released to fix that soon. The point: Don't install Icy Yet!