However, many users feel disappointed with this iOS version, because there are many problems found by users after updating their devices to iOS 9.3. That made Apple has took decision to close for temporarily the updated iOS 9.3 for older devices, through the company's official statement that published yesterday, iOS 9.3 will be re-released a few days later, after getting repairs.
If you already have updated and running iOS 9.3 on your device, but want to downgrade back to iOS 9.2.1, for whatever reason. You can still do it at this time because Apple until now, has not closed the signing window for iOS 9.2.1. Although it is known, if the downgrade has a limited period, because Apple always will lock the signing window access for old version for the next few days, after they officially released the latest version.
Downgrading iOS version not recommended, especially iOS 9.3 is a major update of iOS 9.2.1, has better performance, improved security system, and there are also several new features. So, you just downgrade iOS 9.3 back to iOS 9.2.1, if you have more specific reasons or problem. Did you know, To downgrade the firmware iOS via iTunes in the same way and apply for all iPhone, iPad and iPod.
Step 1: Before you start, you should backup your data contained on iPhone, iPad, iPod via iTunes or iCloud, because, after a successfully downgrade, you can restore your data back in the previous iOS.
Step 2: Next, please download the iOS 9.2.1 ipsw file via "ipsw.Me", download the file that matches the model iPhone, iPad and iPod Touch. Because incorrect ipsw file, you can not work.
Step 3: After you download the IPSW file, please put it on your computer desktop or laptop, then open iTunes application, but make sure you use the latest version of iTunes.
Step 4: Connect your device to your PC via the original cable USB, once connected, click on the device icon on iTunes.
Step 5: In the "Summary" section, press and hold down the "alt or option" key (Mac) and click the "Restore" button on iTunes. For Windows press and hold the "Shift" button and click "restore."
Step 6: Next, will appear a popup window to select ipsw file, find iOS 9.2.1 ipsw file you previously downloaded via ipsw.me.
Step 1: Before you start, you should backup your data contained on iPhone, iPad, iPod via iTunes or iCloud, because, after a successfully downgrade, you can restore your data back in the previous iOS.
Step 2: Next, please download the iOS 9.2.1 ipsw file via "ipsw.Me", download the file that matches the model iPhone, iPad and iPod Touch. Because incorrect ipsw file, you can not work.
Step 3: After you download the IPSW file, please put it on your computer desktop or laptop, then open iTunes application, but make sure you use the latest version of iTunes.
Step 4: Connect your device to your PC via the original cable USB, once connected, click on the device icon on iTunes.
Step 5: In the "Summary" section, press and hold down the "Option" key (Mac) and click the "Restore" button on iTunes. For Windows press and hold the "Shift" button and click "restore."
Step 6: Next, it will appear a popup window to select ipsw file, find iOS 9.2.1 ipsw file you previously downloaded via the website ipsw.me.
After downgrade process from iOS 9.3 to iOS 9.2.1 finished, your device will reboot automatically, then ready for setting up. You can choose "Set As New" or choose restore your data have backed up before.
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