Help Restoring?

[The Tos]

I keep getting error 1600. I am trying to put iOS5 beta 3 on my device currently running 4.3.3. I have iTunes 10.5. I've done some searching and tried using ideb to ensure I was in dfu mode. I uninstalled iTunes and reinstalled as it suggests also. I am still getting error 1600. And ideas?

 

[Ksizzle9]

Wirelessly posted (Mozilla/5.0 (iPhone; CPU iPhone OS 5_0 like Mac OS X) AppleWebKit/534.46 (KHTML, like Gecko) Version/5.0.2 Mobile/9A5259f Safari/6533.18.5)

Make sure you are running iTunes 10.5 beta 3. That's the first thing off the top of my head. Let us know results