Here's a guide on how to downgrade iOS 11 to iOS 10.3.3 on iPhone/iPad.
Have you downloaded iOS 11 and want to downgrade back to iOS 10.3.3 on your iPhone/iPad? Downgrading from iOS 11 to iOS 10.3.3 is possible?
iOS 11 has so many new features like New control center, redesigned App Drawyer for iMessage, iCloud Syncing, Apple Pay, Screen Recorder, Wifi Sharing, Document Scanning, QR reading, new redesigned Siri with improved voice and translation feature, New Camera features & more features.
You might be feeling annoying bugs of the latest iOS 11 version. Likewise, you have a battery drain issue and crashing applications. Since iOS 11 is just released, it might have bugs and needs some more improvements and bug fixes to run smoothly.
If you feel iOS 10.3.3 is better than iOS 11 or if you have also faced a number of issues on iOS 11 and want to downgrade your iPhone to iOS 10.3.3 from iOS 11 , here is how you can get back to iOS 10.3.3 quickly.
No worries! if you had accidentally upgraded iOS 11 through OTA update, you can easily downgrade iOS 11 to iOS 10.3.3 on your iPhone and iPad. Since Apple is still signing the iOS 10.3.3 firmware, downgrading is now possible.
How to install iOS 11 on iPhone, iPad and iPod Touch without developer account
How to Downgrade iPhone from iOS 11 to iOS 10.3.3
First of all, you need to download the iOS 10.3.2/10.3.1 firmware file for your device from our Download page.
Step 1# You need to upgrade or download iTunes to the latest version on your Mac or PC.
Step 2# Now Turn off Find my iPhone & disable passcode lock via the Settings app. (Settings > iCloud > Find my iPhone).
Step 3# Launch iTunes & connect your iPhone, iPad & iPod Touch using data cable to your computer.
Step 4# Hold the Alt/Option key on the Mac or Shift Key in Windows on your keyboard.
Step 5# Now Select the iOS 10.3.3 ipsw file you had downloaded earlier
Step 6# Then click on the Restore iPhone.
Step 7# iTunes will inform that it will restore your iOS device to iOS 10.3.3 and Click Restore
After restored, your device will reboot to the welcome screen and will now install iOS 10.3.3 on your device.
That’s it. Your device should now be successfully downgraded to iOS 10.3.3 from iOS 11. Your downgrading process is completed; you need to now set up your device by following the on-screen instructions.