iOS 26.5.1 (23F81) for iPhone Air

✓ This firmware is signed. This means that you can restore to it in Finder, the Apple Devices app, iTunes, or idevicerestore.

Release DateJune 1, 2026
Upload DateMay 28, 2026
FilenameiPhone18,4_26.5.1_23F81_Restore.ipsw
Filesize10 GiB
SHA256sum5a5f57c78696d824de81f20f2ba4bf31125b3721ac55ddde5d65790897efef2d
MD5sumbe05ca2cb43131b1d653ee040d639d8e
SHA1sumd42f24d7cfb634bc7d636b1701c092ac8c684e79
IdentifieriPhone18,4
TagsiOS iOS 26.5.1 iPhone Air

iOS 26.5.1 Release Notes

Please note, the documentation below is supplied from Apple's update servers. We don't modify the contents of this documentation.

This update addresses an issue for a small number of users that may prevent wired charging on iPhone Air and iPhone 17 models when the battery is nearly drained.

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