How to Downgrade Your iPhone 3GS, 3G Baseband for Unlock (Mac)

How to Downgrade Your iPhone 3GS, 3G Baseband for Unlock (Mac)

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redtowner - February 14, 2013 at 1:08pm
i have a 3gs with baseband 15.16.07 will this be able to downgrade my baseband so i can unlock?