Apple is not providing any button to stop upgrading iOS in the middle of the process. However, if you want to stop the iOS Update in the middle or delete the iOS Update Downloaded file to save free space, you can do that.
What to do if iPhone is stuck updating?
How do I stop my iPhone from downloading updates?
How to turn off Automatic Updates
Tap iTunes & App Store.
In the section headed Automatic Downloads, set the slider next to Updates to Off (white).
How do I undo an update on my iPhone?
How to remove downloaded software updates
On your iPhone, iPad, or iPod touch, go to Settings and tap General.
Select iPhone Storage or iPad Storage depending on your device.
Locate the iOS software download in the list and tap on it.
Select Delete Update and confirm you do want to delete it.
How do I uninstall an update on my iPhone 13?
Go to Settings > General, and tap Profiles & Device Management. Tap the iOS Beta Software Profile. Tap Remove Profile, then restart your device.
How do I undo the iOS 13 update?
How do I downgrade from iOS 14 to iOS 13?
You simply can’t downgrade from iOS 14 to iOS 13 If this is a real issue for you your best chance would be to buy a second-hand iPhone running the version you require, but remember you won’t be able to recover your latest backup of your iPhone onto the new device without updating the iOS software too.
Can you uninstall iOS 13?
Anyway, removing the iOS 13 beta is simple: Enter Recovery mode by holding the Power and Home buttons until your iPhone or iPad turns off, then continue holding the Home button. iTunes will download the latest version of iOS 12 and install it on your Apple device.
How do I downgrade from iOS 14?
Tips: Downgrade iOS 14 to 13 by Waiting for a New iOS 13 Version
From your iPhone or iPad, Navigate Settings > General and tap “Profile”.
Tap on iOS 14 Beta Software Profile and tap “Remove Profile”.
Restart your iPhone or iPad and wait for a new iOS 13 updates to arrive.
Can you uninstall iOS 14?
In order to uninstall iOS 14 or iPadOS 14, you‘ll have to completely wipe and restore your device. If you‘re using a Windows computer, you need to have iTunes installed and updated to the latest version.
How do I downgrade from iOS 14.2 to iOS 14?
Can I go back to an older version of iOS?
Save SHSH Blobs So You Can Restore Later
Those are the only two official ways to downgrade to previous versions of iOS. You can either downgrade from a beta version to a stable version, or downgrade to the previous stable version during a short window where the old IPSW files are still signed by Apple.
How do I revert to an older version of iOS?
Downgrade your iPhone to an earlier version of iOS
Hold down Shift (PC) or Option (Mac) and click the Restore button.
Find the IPSW file that you downloaded earlier, select it and click Open.
How do I undo an iPhone update without a computer?
It is only possible to upgrade an iPhone to a new stable release without using computer (by visiting its Settings > General > Software Update). If you want, you also can delete the existing profile of an iOS 14 update from your phone.
How do I revert back to iOS 13 from iOS 14 without a computer?
How do I downgrade from iOS 13 to iOS 12?
How do I revert back to iOS 12?
Make sure you select Restore and not Update when going back to iOS 12. When iTunes detects a device in Recovery Mode, it prompts you to restore or update the device. Click Restore followed by Restore and Update. The rest of the process is handled by iTunes; just follow the prompts.