Help with jailbreak/unlock

well bought iphone 3gs guy on craigslist. phone stuck in activation screen wants me put sim card in or else won't go forward. have t-mobile sim card using in phone , have unlocked iphone 3g use tmobile until phone broke.

question is, possible jailbreak , unlock iphone 3gs while in activation state? don't know ispw use because don't know firmware phone running.

 

http://www.hackthatphone.com/

 

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