First, make sure that you're patching an ISO and not a CSO. If it's a CSO, you'll need to find an ISO. Should that fail, I would advise trying to find another ISO. And if -that- fails, I would try different firmware. Hope this helps!
EDIT: I'd advise that you wait to patch until I release KO 2.3, which has a bunch of rebalanced stuff and some bugfixes.