How to Downgrade from iOS 11 to iOS 10.3.3

Apple finally released the final version of iOS 11 to the public which includes several cool features and improvements. There is a lot of excitement whenever Apple releases a new major iOS software update, so it is quite understandable that the natural instinct is to install iOS 11.

If you’ve installed iOS 11, but want to downgrade back to iOS 10.3.3, because you found it too buggy or it is draining battery life then we’ve covered. Downgrading from iOS 11 to iOS 10.3.3 is quite easy as Apple is still signing the iOS 10.3.3 firmware.

Important points

  • You will be able to downgrade back only to iOS 10.3.3, which is the latest version. You cannot downgrade to the previous versions as Apple has stopped signing the older iOS firmware files.
  • Please note that the process involves wiping your device, and then restoring it from a backup, so it can take some time depending on how much data needs to be recovered and your internet connection (if you’re restoring from an iCloud backup).
  • Please use this procedure if you have an iCloud or iTunes backup of your device as it involves wiping your device.
  • The standard iCloud and iTunes backup will likely be iOS 11-based, so it may not restore properly to an iOS 10.3.3 device. So it is important to have the archived backup you made before installing iOS 11 as we had recommended.

Check real-time signing status

To find out if Apple is still signing the firmware file, checkthis website. Green rows with a tick mean that Apple is still signing the firmware file, and you can downgrade from iOS 11 to iOS 10.3.3.

How to Downgrade from iOS 11 to iOS 10.3.3

Note:If you’re downloading the firmware file using Safari then ensure that auto unzip feature is disabled or use Chrome or Firefox. Alternatively, renaming the .zip file as .ipsw file should also work.

  • You now need to put your device in DFU mode (if you want to find out what it means checkthis post for more details):

  • Plug your device into your computer.

  • Turn off the device by holding the Sleep/Wake or Power button and swiping it off.
  • Hold the power button for 3 seconds.
  • Begin holding the Home button without releasing the Sleep/Power button for 10 seconds.
  • Release the power button and continue holding the home button until you get a popup from iTunes that it has detected that your device is in Recovery mode.

  • Click on the
    Ok
    button.
  • Hold the Alt/Option key on the Mac or Shift key in Windows on your keyboard and click on the
    Restore iPhone… (iPad/iPod touch…)
    button.
    Note:
    If you directly click on the
    Restore iPhone
    button without holding the Alt/Option key on the Mac or Shift key in Windows will result in restoring your device back to iOS 10.
  • Select the iOS 10.3.3 IPSW file you had downloaded earlier.
  • Then click on the
    Restore and Update
    button to continue.

  • In the next screen, it will give you information about the iOS 10.3.3 update. Click on the
    Next
    button, followed by the
    Agree
    button to continue.
  • iTunes will now verify the software and install it on your device. It should take around 10 minutes.
  • After it is successfully restored to iOS 10.3.3, you should see the white ‘Hello’ screen. Follow the on-screen instructions to set up your device, and restore your device from the archived backup you had made before installing iOS 10 to restore your personal data.

That’s it. Your iPhone, iPad or iPod touch should now be successfully downgraded from iOS 11 to iOS 10.3.3.

Troubleshooting Tips

If you get the error message “This device isn’t eligible for the requested build” then it is probably because you’ve downloaded the wrong firmware file for your device.

Please don’t forget to let us know how it goes in the comments and drop us a line if you any questions or need any help.

Source: http://www.iphonehacks.com/2017/09/how-to-downgrade-ios-11-to-ios-10-3-3-iphone-ipad.html