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I have an iPad 2 GSM with iOS 4.3.5 that I would like to upgrade to iOS 5.1.1.

I tried to upgrade using an Apple 5.1.1 image, without success due to the signing window for 5.1.1 being closed.

If I enroll in the Apple Developer program ($$$) will it be possible for me to upgrade to iOS 5.1.1? How about downgrade to other versions (e.g. 4.1)?

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No, being enrolled within the Apple Developer's Program does not provide you with any kind of special downgrade possibilities.

In the other hand, being a Developer grants you the ability to upgrade to the newest yet-to-be-released version of iOS.

So, being the iPad 2 eligible for iOS 6, you won't be able to upgrade it to iOS 5.1.1 instead, enrolled as a Developer or not.

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    As today if you need to test an application with ios 4.1 or 5.1 how you manage if you have a device with ios 6 ? Commented Oct 11, 2012 at 10:48
  • @PedroTiagoPereira There's no problem on testing an App deployed for previous iOS versions with a device with the latest version, it will work exactly the same. If the gap between version is too big, perhaps you'll find so deprecated code, though.
    – Thecafremo
    Commented Oct 11, 2012 at 11:33
  • I understand that, but because you are using a new version you cannot be 100% sure, that a user with a previous iOS will have the same behavior. This is not the same, but the question is if a developer is an early adopter and upgrades the registered device, there is no way back for him ? Commented Oct 11, 2012 at 11:38
  • I'm afraid not. You could always use the Simulator or downgrade with the Jailbreak options.
    – Thecafremo
    Commented Oct 11, 2012 at 11:41
  • uau, i'm surprised with the ios testing capabilities. Commented Oct 11, 2012 at 11:58

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