This article for who waits for downgrade iOS 9.3.4 to iOS 9.3.3 back. That mean is, If any user have upgraded iOS 9.3.3 to iOS 9.3.4 and again he need to back again iOS 9.3.3, This will help you and this will work on iPhone 4, 4s, 5, 5s, 5c, 6, 6s, 6 plus, 6s plus as well as ipad from ipad 2 all the way to the iPad air 2 and all of the ipad many version and as well as the ipod and ipod touch.
Lat’s see how to start this downgrade easily. Firstly we need latest iTunes version and iOS 9.3.3 IPSW firmware for this downgrade. You can download both of above firmware and iTunes from below download links directly.
If you already download iTunes, you do not need download it again. And not yet download it please download it through above link. After that you just need to install iTunes to your PC. your PC may be Windows or Mac. It does not matter to your downgrade process. Keep in mind you need to turn off your pass code and sign out iCloud before start this downgrade.
As a next step you need to open iTune and connect your iDevice to your PC via USB cable. It will take several time and iTunes will detect your device. Keep in your mind do not unplug the device from your PC till end this downgrade.
In next iTunes will show you a massage to restore your device. In this step if you are a Windows user you just need to click restore button with shift key and if you are a Mac user, you just need to click restore button with option key.
Then again iTunes will receive another window to select ipsw firmware which is you download from above link. Please select iOS 9.3.3 ipsw restore firmware and click on open on same window of iTunes. And again you will receive another window to restore iOS 9.3.3 on your iDevice.
This downgrade process will take couple of minutes and it will give another window for download & update your device. Then click on that button and it will setup your iDevice properly. Then again as a last step iTunes will receive another window with two options. In this last step you need to select set up as a new iPhone option and click on continue button. Then your iDevice will reboot and it will base on iOS 9.3.3. Now you can use again iOS 9.3.3.