Announced in June 2015, iOS 9 is now a public download version. And 16th September was the busiest day for internet service providers as almost all iPhone, iPad and iPod touch owners downloaded this public version – this includes developer community too.
But after downloading iOS 9 public version, you have experienced some glitches in your iDevice; some apps are not yet compatible with this latest version or you feel that your phone runs slower with this latest iOS version or perhaps you are still so much in love with that previous iOS version.
There can be number of reasons why you want to downgrade from iOS 9 to iOS 8.4.1. This information will help you downgrade to the previous version. But before you downgrade your iOS version please ensure that you have your data backed up properly.
Apple normally signs off the previous version a month or two after it officially launches new iOS. Moreover, once you take a backup on iTunes, you cannot restore the same on the older version of iOS; be prepared to lose some data.
Before you downgrade from iOS 9 to iOS 8.4.1, you need to download iOS 8.4.1 IPSW that is compatible with your iDevices. Equip your computer with IPSW file, a USB/Lightning Cable and iTunes.
How to Downgrade from iOS 9 to iOS 8.4.1
Step #1. First off, launch Settings app on your iDevice → Tap open iCloud.
Step #2. Scroll down and tap on “Find My Phone”.
Step #3. Toggle “Find My Phone” off.
Step #4. Now switch off your iDevice by long pressing power button.
Step #5. Open iTunes on your computer.
Step #6. Connect your iDevice to the computer via USB cable.
Step #7. Press power button and home button simultaneously for 10 seconds.
Step #8. Now release the power button & hold the home button.
A message will pop up in iTunes: A device in recovery mode has been detected.
Now you are ready for the downgrade process.
Step #9. Click on your iDevice seen on iTunes.
Step #10. Click on Summary button.
Step #11. Click on Restore button.
If you are using Mac OS X, click the Restore button with OPTION.
If you are using Windows computer, click the Restore button with SHIFT.
Step #12. Browse iOS 8.4.1 IPSW file you have downloaded and select the same.
Once the downgrade procedure completes, your device will flash a new setup screen. Do not mess with your device while downgrade process is on. Now you are on the previous iOS.