The iPad will wipe itself and perform a clean installation of iOS 8.4.1. Why Downgrade to 8.4.1?
While the speed gains are undeniable, there are compromises: App Compatibility: downgrade ipad 2 ios 9.3.5 to 8.4.1
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, you can downgrade to this smoother version without needing SHSH blobs. The iPad will wipe itself and perform a
If you'd like to make the most of your "new" old iPad, I can help you: Find that still work on iOS 8 Set up a jailbreak for iOS 8.4.1 (EtasonJB) downgrade ipad 2 ios 9.3.5 to 8.4.1
On your iPad, go to and "Trust" the developer profile.