Download iOS 26.3.1 (23D8133) for iPhone Air

You will have to note that you can only restore signed IPSW firmware files using iTunes or 3utools.

✅ This IPSW firmware is Signed

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Check if there are beta versions available for your iPhone Air on our beta portal.

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Firmware Identifier iPhone18,4
iOS Version 26.3.1
Release Date 2026-03-04
Update Date 2026-03-01
Sha1sum
5d138a0930f9ead4c45f42c851c5ece479e96830
Sha256sum
0f06f20855a0d2452b5ecb1e0186ad539100b3906827cd2888aaa60942e873a3
md5sum
99e16b47aea60efa90d5e5766621ac87
Size 10.00 GB
FileName
iPhone18,4_26.3.1_23D8133_Restore.ipsw
Status

Download IPSW (10.00GB) Check device info Check Beta Firmware Jailbreak Check
Release Notes

It should be noted that these are the official release notes for the from Apple

Design

Apple Intelligence

Camera

Photos

Phone

Messages

CarPlay

Maps

Music

Wallet

Apple Games

Protecting Kids Online

Accessibility

Other

For information on the security content of Apple software updates, please visit:

https://support.apple.com/100100

Some features may not be available in all regions or on all iPhone models. To learn more, please visit:

https://www.apple.com/ios/feature-availability/

Software updates, like this one, add new features and improvements that may affect performance and/or battery life. To learn more, please visit:

https://support.apple.com/125039

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Frequently Asked Questions

What is IPSWDL.COM?

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IPSWDL.COM is a website that provides download links for IPSW files, which are used to install or restore firmware on Apple devices. These files are sourced directly from Apple's servers.

What is an IPSW file?

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How can I use an IPSW file to restore my device?

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Where can I download IPSW files?

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What is the difference between IPSW and OTA updates?

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Can I downgrade my iOS version using an IPSW file?

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