Apple Stops Signing iOS 9.3.3, Downgrade No Longer Possible

The iOS 9.3.4 update released by Apple just a few weeks ago patched the Pangu jailbreak for iOS 9.3.3. Up until now, it was possible to downgrade from iOS 9.3.4 back to iOS 9.3.3 but Apple has now closed the signing window for iOS 9.3.3, which means that it’s no longer possible to downgrade or even upgrade to that firmware.
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