Simple answer:no
Long answer:kinda
Using software you cannot unlock your iPhone because when you updated, it upgraded the baseband to 2.30 with bootloader 5.9 so you can no longer downgrade your baseband, the only valid way to unlock the iPhone that you have in it's curre t state is to buy a turbosim...that's what I did for the iPhone I am using right now..except I am still waiting for it to come in the
Mail, until then I have an iPod touch with a camera :]