How To Downgrade From iOS 11.0.3 To iOS 10/iOS 10.3.3

    Did you upgrade your iOS device to iOS 11 only out of excitement and then found out that you were better off with the iOS 10 or iOS 10.3.3 that you were already using. Stable versions of iOS are always preferable and one should only switch to the latest versions if they really need that. On stable versions you don’t have to face any compatibility issues, bugs or other problems. So, if you’ve been regretting your decision ever since you had first upgraded, the good news for you is that you can now downgrade back to iOS 10.3.3 or iOS 10 while these firmware versions are still being signed by Apple.

    It is possible to downgrade right away to iOS 10.3.3 with iTunes. However, one thing that you really need to keep in mind is that once you’re at iOS 10.3.3, it won’t be possible for you to restore your iTunes or iCloud backups if you had made them when you were running iOS 11 or iOS 11.0.3 on your device. During the downgrade process, you get the option asking you to restore from a backup that you had captured when on iOS 10.3.3 earlier, or set your device up as completely new iPhone.

    Downdgrade iOS 11.0.3
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    So, now let’s dive straight into how you can actually downgrade your device to last stable iOS version. Here are the steps to follow.

    1. Firstly, you have to ensure that you are running latest iTunes version on your Windows PC or Mac. But, if you’re not, download it and install on your machine right away.
    2. Secondly, make sure that you have an appropriate IPSW file ready to be used in the downgrading process. You can download it now if you don’t already have it.
    3. Now turn off Find My iPhone feature of your iPhone before you proceed with the downgrade. For this, open Settings and go to Find My iPhone in iCloud section. Toggle the switch in front of Find My iPhone to Off and confirm by providing your password to iCloud when prompted.
    4. Connect your iPhone to your PC or Mac using USB cable and launch iTunes. Put your device in DFU mode or Recovery mode now. Though it is possible to bypass getting into DFU mode completely and go for a normal restore with iTunes but it is recommended to use DFU mode and avoid any kind of potential issues.
    5. Next, go to iTunes and press Option key (when using Mac) or SHIFT key (when using windows) and hold it. Select Restore iPhone option now in main device window. Select IPSW file for iOS 10.3.3 that you have on your computer and to which you’d like to downgrade.
    6. iTunes will now continue with the process and your iOS 10.3.3 firmware will be restored on your iPhone.

    Once the process is completed, you will see that same greeting message which you get when setting up your device for the first time. You can now set your device up as you need and enter your desired settings.

    Update 1: As the signing window of iOS 10.3.3 has been closed by Apple for all the devices other than iPhone 6S, the downgrade process above works only on this model. If you have any other model of iPhone then, unfortunately, you’re out of luck.

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