No Way to Downgrade from iOS 9.1
Apple leaves open a path to downgrade from the current version of iOS to the last one for a short period after the release. Until late last week users who ran into problems with iOS 9.1 could downgrade to iOS 9.0.2.
This is no longer the case as Apple stopped signing the update. This means that it is impossible to install the iOS 9.0.2 update on either of these devices to go back to the older version anymore.
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