Restoring older firmware through XCode?

StackOverflow https://stackoverflow.com/questions/3034771

  •  27-09-2019
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Question

I'm trying to restore iPhone OS 3.1.3 to a 3GS that has been upgraded to iOS 4. iTunes refuses to complete the install. What needs to be done? I am currently using the GM XCode. Should I be using the latest public stable version instead?

Update:

XCode reports that "The baseband cannot be rolled back".

Was it helpful?

Solution

This link has some answers.

BlackRa1n gets the iPhone out of the reboot loop after a failed baseband rollback.

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