Earlier this month, Apple stopped signing iOS 8.4.1, which means the inability to roll back with iOS 9.0 and newer versions of the OS to the previous version of the software platform. However, for some iPhone and iPad models this was possible.
OdysseusOTA is a command line tool, with which you can perform to downgrade iPhone 4s and iPad 2 with iOS 8.x.x to iOS 6.1.3. Today the second version of the program, which allows you to work with the iOS 9 update. This expands the list of supported models, including now includes iPhone 5, iPhone 5c, iPhone 4s, iPad 3 and iPad 2.
“This became possible due to the fact that Apple still signs iOS 8.4.1 OTAblobs for these devices, and we have the keys for them. This method does not work on any other version of iOS.
To downgrade you will need jailbreak,” writes the developer OdysseusOTA.
Thus, users of iPhone 5, iPhone 5s, iPhone 4s, iPad 3 and iPad 2 appeared a work method to roll back with iOS 9 more stable iOS 8.4.1. IOS 7 users.x, in turn, can install iOS 8.4.1.
How to roll back from iOS 9 to iOS 8.4.1 you can see in the video below:
Download OTAblobs 2 at this link.