QUOTE(tornad0 @ Apr 21 2009, 01:17 PM)
hmm thanks
But I think mine is original firmware downloaded from iTunes? Can I still use yellowsn0w to unlock?
or I need to restore back to 2.2.1 custom ipsw from the Page 1 then do the downgrade baseband process?
AFAIK, all original firmware was from itunes, it's just a matter if you downoading it directly from itunes or download it from other link..
as for you iphone, you dont need to downgrade your firmware, just use the baseband downloader will do, just follow guide bro david told you and everything will be perfect then,
in order for yellowsn0w to work, it is a must to have baseband 2.28.00 and yellowsn0w will work, if you on 2.30.03 and use yellowsn0w it wont work eventhough you have install the yellowsn0w app into your iphone..hope your baseband is on 5.8 if not then you cant downgrade your baseband.
p/s: dont need to restore because you only downgrade the baseband only not the firmware. good luck and share the result with us ok..
cheers.
Taka.