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3GS iphone with version 3.1.3 - I want to upgrade the ISO

I have a 3GS Iphone with the original version 3.1.3 system on it and firmware 05.12.01. I would like to upgrade it. I had to update to itunes 11 and I am just getting the option of iso 6 when I select the update. It takes forever for anything to happen so I have cancelled it. Is there any tips or help someone could give me. Thanks.

MacBook Pro, Mac OS X (10.6.8)

Posted on Jan 27, 2013 10:45 PM

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3GS iphone with version 3.1.3 - I want to upgrade the ISO

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