Users who installed the iOS update 9.3 for iPhone and iPad, it is possible to roll back to the previous OS version. Traditionally, after the release of every new version branded the “axis” of Apple leaves for a while the opportunity. A day after the release of the cumulative update, the company still issues certificates to iOS 9.2.1.
Dated March 21, iOS software 9.3 is a major release with lots of changes. The key new feature include support for mode Night Shift, which at night automatically shifts the color temperature of the display to the warm end of the spectrum. Studies have shown that bright blue in the evening can affect the circadian rhythms, which complicates the process of falling asleep. Among other innovations are password-protected Notes, app, Apple News, updated the CarPlay interface.
Judging from comparative tests, iOS 9.3 9.2.1 iOS works better in terms of performance. However, some users complain of accelerated discharge of the battery of their devices and problems with activation of gadgets. In such cases, it makes sense to use the manual downgrade to the previous OS version. Another reason why the user can decide to downgrade, jailbreak. According to preliminary information upcoming exploit will not be available for the latest version of the OS, at least at first.
Note that we are talking about the refund only on iOS 9.2.1 for her Apple issues digital certificates. The situation may change at any time.
- iPhone or iPad running iOS 9.3.
- IPSW-file iOS 9.2.1.
- 12.3.3 iTunes for Mac or Windows.
How to roll back from iOS to iOS 9.2.1 9.3:
Step 1: Download the file iOS 9.2.1 from Apple at this link.
Step 2: make sure you have installed iTunes 12.3.3. Download the latest version at this page.
Step 3: back up your data. This can be done on the iPhone or iPad: iCloud –> Backup –> backup, or by connecting mobile device to computer and save a backup using iTunes.
Step 4: turn Off Touch ID/Password in the settings section Basic.
Step 5: In this step, you need to disable “Find my iPhone”. The option is in the menu Settings –> iCloud.
Step 6: connect your iPhone, iPad or iPod touch running iOS 9.3 to your PC.
Step 7: Open iTunes and in the top bar select the icon of your gadget.
Step 8: Hold down the keyboard Shift (or Alt on OS X), click the “Restore”button.
Step 9: In the program window, specify the firmware file iOS 9.2.1 you downloaded in step 1.
Step 10: Wait for the completion of the procedure, the recovery process the OS will take some time. You can now use the iOS device 9.2.1.