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The new iOS 10.3 update has been released for all Apple devices. This update has many new exciting and amazing features, fixes, and lots of security patches for iPhone devices. The features include the ability to find your missing AirPods as iPhone Bluetooth earbuds are so small, WiFi iPhone calls through iCloud connected device, the benefit for app developer now the developer can reply on user ‘s reviews on apple store and many more. The update has expanded the Sirikit support, Which make it easier to pay bills, schedule a ride-hailing service, and even check on the status of a pending payment.

The iOS 10.3 update are of 600MB in size and its installation process is a little bit longer. But there are some issues which has been reported by iPhone users regarding iOS 10.3 update which includes battery drain, Bluetooth and wifi and random reboots. You can update to iOS 10.3 by going to Settings ->General-> Software update. But if you have been facing issues with this latest update then you can downgrade back to iOS 10.2.1.

You may also read: How to get a black dock on your new iPhone mobile

Update: The guide in the article also works for iOS 10.3.1.
For user who wishes to have jailbreak and want to remain with iOS 10.2.1, If you have upgraded to iOS 10.3 and wish to have jailbreak tool for this update, then you need to downgrade back to iOS 10.2.1 to increase your chances of Jailbreaking.

Sumiq

In this article, you will see how to downgrade iOS 10.3 to iOS 10.2.1 using iTunes. But just remember that this downgrade is only possible if Apple is still signing iOS 10.2.1. As of this writing, iOS 10.2.1 is still being signed. You need to check your device signing status from here.

Here are some important points to consider before downgrading:

1- First, insure that you have latest updated version of iTunes.
2- Downgrading to iOS 10.2.1 is only possible when iOS firmware being signed currently for supported devices. You cannot downgrade to the previous versions as Apple has stopped signing the older iOS firmware files.
3- It always good to keep a backup of all your valuable data on iPhone device. So take backup of your iOS device using iCloud or iTunes so that you have data recovery option.
4- It is a time taking activity depending on your iPhone device data because process involves wiping your device and then restoring it from a compatible backup. So keep patience and keep eye on your internet connection.

In this tutorial, you will learn How to Downgrade iOS 10.3 to iOS 10.2.1

Step by Step Downgrade iOS 10.3 to iOS 10.2.1:

Step No 1: Download the iOS 10.2.1 IPSW file for your iPhone device and also make sure that you have downloaded the correct firmware that corresponds to your device model.
Note: If you are using Safari to download the files then ensure that auto unzips option is disabled and you may also use Chrome or Firefox.Alternatively, renaming the .zip file as .ipsw file should also work.
Step No 2: Put your device in DFU mode. For iPhone 7 or iPhone 7 plus please read this guide DFU mode. For iPhone devices older than iPhone 7 follow the steps
Connect your device with the computer.
Turn off your device by holding the Power button and then sliding to power off.

You may also read: How to unlock or bypass iCloud activation lock on your iPhone or iPad

Next, press and hold the Power button for 3 seconds.
Then begin holding the Home button without releasing the Power button for 10 seconds.
Now leave the power button and continue holding the home button until you get a popup from iTunes that it has detected your device is in Recovery mode. If you don’t see the popup, try the process of holding the buttons again.
Click on the OK button in the popup.

ios 3.1 iOS Apple iPhone Mac How to Downgrade iOS 10.3 to iOS 10.2.1
Step No 3: Hold the Alt/Option key Mac or you can also Shift key in Windows and then click on the Restore iPhone button.

ios 3.1 iOS Apple iPhone Mac How to Downgrade iOS 10.3 to iOS 10.2.1Step No 4: Browse and select the downloaded iOS 10.2.1 IPSW file.
Step No 5: click on the Restore and Update button to continue. ios 3.1 iOS Apple iPhone Mac How to Downgrade iOS 10.3 to iOS 10.2.1Step No 6: The next screen will appear with information about iOS 10.2.1 update. Click on the Agree button and then click On Next button to continue
Step No 7: Now iTunes will verify and install the software update on your device. It will a time taking process. So just wait til complete it.
Step No 8: You should see a white ‘Hello’ screen on your device after successfully downgrading from iOS 10.3 to iOS 10.2.1. Set up your device by following the instructions on the screen and restore from the iOS 10.2.1 backup.
Now you have done with the downgrading of your iPhone or other Apple devices. From iOS 10.3 to iOS 10.2.1. But if you see any error message like “This device isn’t eligible for the requested build” then it indicates the possibility that you have downloaded the wrong firmware file for your device.
So just be careful and do not miss any guideline from this article.

You may also read: How to Download and Install IOS 10.3 Links on iPhone 7, iPhone 6/6s, iPhone Plus, SE, iPhone 5/5S/5c, iPod and iPad

JPEG’S Courtesy: iphonehacks

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