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iphone 3GS 4.3.5 now unlockable or not?

post #1 of 3
Thread Starter 
So, iphone 4S came out and I was wondering if ATT has unlocked the 3GS 4.3.5 so that I can use the baseband on Tmobile.

If not, then anyone have any idea when they're going to do that?

If not, can anyone tell me a surefire method to unlock this phone by downgrading to a certain version/firmware etc? Link appreciated.

If I do above method, what problems might I incur?
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2nd Gig
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Sayonara
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Denon AVR-1912 Harman Kardon Infinity Primus P153  HIFIMAN HE-400 Vsonic GR07 
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post #2 of 3
You can go to this link http://modmyi.com/forums/unlocking-a...an-unlock.html

there is a lot of information there, but seems your phone can not be able to unlocked.
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post #3 of 3
unless you used a custom firmware cooker like sn0wbreeze and told it to preserve the base band you went up to 5.16.XX which is not unlockable. you cant go back down on base band firmware, only up. so you have 2 options, pay for an imei unlock or risk losing gps and go up to the ipad base band 6.15 i believe it is
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