How to undo an update
How do I undo an update?
How do I undo an update?
After a software update is installed for iOS, iPadOS, tvOS, watchOS and visionOS, it cannot be downgraded to the previous version.
What can you do about this?
You can provide ⇢ Product Feedback.
If enough requests are made, your feedback might help with future development, like a toggle in the settings.
Good luck! 👋🏼😉
I am not clear why you want to do that. Was your device Jailbroken? If that's the situation, please be informed that attributing the issues to iOS updates may not be accurate.
Change is difficult to adapt to because it disrupts our comfort zones, introduces uncertainty, and challenges our sense of identity. It often requires letting go of the familiar, which can feel uncomfortable. Mental ageing plays a role too — it’s really a resistance to change, while physical ageing itself isn’t the issue. And just like in life, some things simply can’t be rolled back — for example, there’s no rolling back of an iOS version once updated.
Still, change is an inevitable part of life, and learning to adapt to it is essential for growth. With time, patience, and an openness to new possibilities, we can overcome the discomfort and find ways to thrive in new circumstances.
I have been updating my devices ever since I bought my first device in 2009. iPhone 3Gs, 4S, 5, 6, SE (1st Gen), 7, 8 and iPhone 12 Pro, iPad Pro, iPhone 13, Macbook Air 2019, MacBook Pro 16"
I never had any issues with any iOS, iPadOS, or macOS updates to date.
I would personally recommend everyone update their devices instead of listening to rumors from people who may not have kept their devices free from any spurious software.
iOS / iPadOS devices cannot be hacked or infected with Virus / Malware / Spyware if it is updated to the latest iOS/iPadOS unless you have intentionally downloaded spurious software or unauthorized apps directly from the internet and installed them on your device or/and have Jailbroken.

iOS updates generally aim to enhance user experience, boost security, and fix bugs rather than disrupt core features. Issues after updates might stem from underlying, unmentioned factors. Updates won't typically alter personal data but may refine settings or features. Backup before major updates for safety. Review Apple's update details and backup advice for a smooth process.
This seems purely coincidental, so please check the settings on your device.

See what each update does: OS — iOS 26, About iOS 18 Updates, About iOS 17 Updates, About iOS 16 Updates, About iOS 15 Updates, About iOS 14 Updates, About iOS 13 Updates, About iOS 12 Updates, and so on...
"How to undo an update: How do I undo an update?"
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Undoing an Update:
If you are not talking about an iOS update, but rather a third-party App Update...
Restore from Today's Backup:
Restore your iPhone from a backup of it that contains the app status, and you could recover it to that. However, you cannot downgrade to a previous iOS version.
there is no means to downgrade an iPhone.
How to undo an update