Here's the solution

http://sleepers.net/news/?page_id=216

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Off Topic
What's the deal with this "I accidentally updated to FW2.0" stuff? Its not like itunes secretly update the phone or someone threaten you at gunpoint to update. You have to physically click the confirmed button to update. Unless you have a trigger happy finger where you click click click click without reading first.

Disclaimer:
"You" in the above statement is not referring to the Thread Starter (Zealth). I'm generalizing to the people who read this statement and "accidentally" update the phone to FW2.0.

Credit goes to BigBoss for making the guide. I only point to the right direction.

Hahahaha ... good to make you laugh with my words