How to Delete an Update on iPhone: What You Can (and Can't) Do
Seeing a software update notification badge on your iPhone can feel like pressure — especially if you're not ready to update, or you've already downloaded the update file and want to free up storage. The good news is you have more control than Apple's interface might suggest. The less obvious news is that the options vary depending on where you are in the update process.
What "Deleting an Update" Actually Means
There's an important distinction to understand upfront: downloading an update and installing it are two separate stages. iPhone iOS updates are large files — often 1–5 GB — and your iPhone may download them automatically in the background, even before you've agreed to install anything.
When most people ask about deleting an update, they typically mean one of two things:
- Removing a downloaded update file before it's installed (to reclaim storage)
- Reverting to a previous iOS version after an update has already been installed
These are very different situations, and they have very different answers.
How to Delete a Downloaded iOS Update File
If iOS has downloaded an update in the background but you haven't installed it yet, you can delete the update file manually. This is one of the most straightforward things you can do:
- Open Settings
- Tap General
- Tap iPhone Storage
- Scroll through the list and tap iOS [version number]
- Tap Delete Update
- Confirm when prompted
This removes the downloaded file from your device without affecting your current iOS version. Your iPhone stays on whatever version it's running, and you free up that storage space immediately.
⚠️ Keep in mind: if Automatic Updates is enabled in your settings, your iPhone may re-download the update again overnight while charging and connected to Wi-Fi. To prevent this, go to Settings → General → Software Update → Automatic Updates and toggle off Download iOS Updates.
Can You Undo an iOS Update After Installing It?
This is where the reality of Apple's ecosystem becomes a limiting factor. Once an iOS update is fully installed, there is no built-in way to roll back to a previous version through normal iPhone settings. Apple does not provide a native "undo update" option within iOS itself.
The only method that has historically existed for downgrading involves restoring the iPhone through a computer using iTunes (on Windows or older macOS) or Finder (on macOS Catalina and later), and installing a signed IPSW (iPhone Software) file. However, Apple controls which iOS versions remain "signed" — meaning officially accepted by Apple's servers — and this window closes quickly after a new version is released. Once Apple stops signing an older version, even technical workarounds become unavailable.
Practically speaking: if you've already installed an update, reverting is rarely possible for the average user, and the technical window to do so is narrow even for those who know how.
Why People Want to Delete Updates — and What That Means for Their Options
The reason behind wanting to remove an update matters, because it shapes which path actually helps:
| Reason | Practical Option |
|---|---|
| Freeing up storage space | Delete downloaded-but-uninstalled update file |
| Disliking the new iOS features | Limited — reverting is rarely feasible |
| Performance issues after update | Reset settings, restore, or wait for a patch |
| Update downloaded without permission | Delete file + disable Automatic Updates |
| Compatibility concern with an app | Check for app updates; contact developer |
The Automatic Download Problem 📱
A common frustration is discovering that iOS downloaded a large update file without explicit permission. This happens because Automatic Updates is enabled by default on most iPhones. Apple designed this to reduce friction around security patches, but it can catch users off guard — especially those on limited storage devices or metered data connections (though Apple typically restricts background downloads to Wi-Fi).
Disabling automatic downloads doesn't prevent you from updating manually whenever you're ready. It simply stops the phone from staging updates in the background without your input.
Variables That Affect What's Possible for You
Not everyone's situation is the same. A few factors that determine what options are actually available:
- How recently the update installed — The window for any downgrade workaround closes fast, often within days of a new iOS release
- Your current storage capacity — Smaller capacity devices (64 GB or less) feel the impact of a cached update file more acutely
- Whether you have a computer with iTunes or Finder available — Without one, technical restore methods are off the table entirely
- Your iOS version and device model — Older devices may have fewer options for certain restore paths
- Whether you use iCloud Backup or local backups — This affects what data you can recover if a restore is required
What Happens If You Keep Dismissing the Update?
You can delay updates indefinitely by simply not tapping Install. Dismissing the notification doesn't delete the downloaded file, though — it just postpones the installation. The file stays on your device consuming storage until you either install it or manually delete it using the steps above.
Eventually, Apple may push certain security updates more aggressively, but for most standard iOS version updates, users retain the choice of when (or whether) to install.
Where your situation falls on this spectrum — storage-conscious user, someone who just installed an unwanted update, or someone trying to prevent future automatic downloads — determines which of these paths is worth exploring first.