A few days after the release of the final version of iOS 9, the network began to emerge comments from disgruntled users, instead they got a new device outside the operating system. On the same problems faced and our readers. Particularly common bug screen "Slide to Upgrade", which did not allow access to the firmware. We'll show you how to fix it.
Apple representatives personally respond to user complaints (this is usually solved by the forces of the users themselves), during which the following scheme has been proposed. True, need a computer and having it on iTunes.
Step 1. Connect the device - iPhone / iPad / iPod touch - to the computer via USB.
Step 2. Run iTunes and select your device in the attached list. If suddenly the icon does not appear, hold down the lock button and the "Home" on the device by holding them for 10 seconds. The device will reboot and will appear in iTunes.
Step 3. In the device in iTunes, click "Restore from Backup" and select the latest backup. If you do not, create one by clicking the "Backup". Restore from the created file, and you get a smartphone running iOS 8.4.1 on board.
It is reported that in the near Apple update fixes the problem.
(via)