What Changed in iOS 15.8.8
Apple published no developer release notes for iOS 15.8.8, which is normal for a release that carries security fixes and nothing an app would notice. Nobody outside Apple can list its changes, and this page will not invent them.
Apple's security advisory for iOS 15.8.8 lists 1 fixed vulnerability. Every one is on its security page, with what it could have allowed.
iOS 15.8.8 shipped as build 19H422 on May 11, 2026.
iOS 15.8.8 Build Numbers
iOS 15.8.8 is build 19H422 on every device that runs it. To check what you are on, open Settings → General → About and tap the version number.
Apple shipped it alongside iPadOS 15.8.8 the same day — the platforms move together even when the build numbers do not match.
The same day also brought iOS 16.7.16, iPadOS 17.7.11, iPadOS 16.7.16 for devices that stopped at an earlier version. Those carry the security fixes without the rest of iOS 15.8.8.
| Platform | Version | Build | Released |
|---|---|---|---|
| iOS | 15.8.8 | 19H422 | May 11, 2026 |
| iPadOS | 15.8.8 | 19H422 | May 11, 2026 |
Which Devices Run iOS 15.8.8
iOS 15.8.8 runs on every device that runs iOS 15: 30 models. A point release never changes the supported list — if iOS 15 reached your device, iOS 15.8.8 does too.
The full compatibility list covers every platform.
- iPhone SE (3rd generation)
- iPhone 13
- iPhone 13 mini
- iPhone 13 Pro
- iPhone 13 Pro Max
- iPhone 12 mini
- iPhone 12 Pro Max
- iPhone 12
- iPhone 12 Pro
- iPhone SE (2nd generation)
- iPhone 11
- iPhone 11 Pro
- iPhone 11 Pro Max
- iPhone XR
- iPhone XS
- iPhone XS Max
- iPhone XS Max (China mainland)
- iPhone X (CDMA)
- iPhone X (GSM)
- iPhone 8 (CDMA)
- iPhone 8 (GSM)
- iPhone 8 Plus (CDMA)
- iPhone 8 Plus (GSM)
- iPhone 7 (CDMA)
- iPhone 7 (GSM)
- iPhone 7 Plus (CDMA)
- iPhone 7 Plus (GSM)
- iPhone SE (1st generation)
- iPhone 6s
- iPhone 6s Plus
How to Install iOS 15.8.8
Open Settings → General → Software Update → Beta Updates and install it like any other update. There is nothing to download first and no profile involved — Apple removed beta profiles in 2023, and a shipped release never needed one anyway.
If the update does not appear, it is usually one of three things: the rollout has not reached your device yet (Apple releases in waves over a few days), the device is below the storage the installer needs, or it is enrolled in a beta channel that is already ahead of this version. Our guide to an update that will not show up works through each.
Can You Still Install iOS 15.8.8 Today?
Yes. Apple is still signing iOS 15.8.8 (19H422) for 7 models, which means a restore to it completes. The iOS 15 IPSW files carry the signing status per build, rechecked automatically.
This matters for going back, not for going forward: a device already on iOS 15.8.8 stays there until the next update. Our downgrade guide covers what is possible and what is not.
Frequently Asked Questions
What's new in iOS 15.8.8?
Apple published no release notes for iOS 15.8.8. Its security advisory lists 1 fixed vulnerability, all on its security page; no feature list exists — any site publishing one is guessing.
Is iOS 15.8.8 a security update?
Yes. It fixes 1 vulnerability by Apple's advisory. The full list is on its security page.
When was iOS 15.8.8 released?
May 11, 2026.
What is the build number for iOS 15.8.8?
19H422. Settings → General → About, then tap the version number to see it.
Should I update to iOS 15.8.8?
It is a shipped release rather than a beta, so the usual beta cautions do not apply: apps are built against it and it carries the security fixes of everything before it. The one reason to wait is a device you cannot afford to be without for an hour. Back up first either way.
Can I go back to the previous version after installing iOS 15.8.8?
Only to a build Apple is still signing, and only by erasing the device and restoring from an IPSW. The catalogue shows what is signed right now.
Does iOS 15.8.8 fix battery drain?
Heavy battery use for a day or two after any update is re-indexing, not a fault, and it settles. Apple published no notes for iOS 15.8.8, so nobody outside Apple can say.
Is there a beta profile for iOS 15.8.8?
No, and there is nothing to install: iOS 15.8.8 is a public release that arrives through Software Update. Apple removed beta profiles in 2023 — the explainer covers what replaced them.
