Upgrade 3GS from 3.1.3 to 5.1.1

Peligro911

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Jun 1, 2011
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Question
I want to update a 3GS from 3.1.3 to 5.1.1 once JB is out I need to save the baseband as it is currently unlocked
My understanding use redsnow create custom file saving baseband .. Go to dfu. Shift restore .. Once loaded jail break once it's out for 5.1.1 load ultrasnow fixer then load ultrasnow ..

Am I missing anything ?


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iDonev

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Jan 11, 2011
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Yep that's pretty much it. :)

For those who might not know the repo with the fix is:
Code:
http://repo.iparelhos.com
 
Last edited:

Peligro911

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Jun 1, 2011
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Is there a easy way to tell old boot vs new ? I know you can go by serial for dates but that has been wrong for me in the past for the phones that were in the middle


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