iOS 26.3.1 (23D8133) for iPhone 13

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

Release DateMarch 4, 2026
Upload DateMarch 1, 2026
FilenameiPhone14,5_26.3.1_23D8133_Restore.ipsw
Filesize9.3 GiB
SHA256sum230ee03c468c5f380a9beb53aaf99cda21f7a1bac3921dadd4ba0d2d8cc0f617
MD5sum3c572fbf7065920af58b31ecfa78c3a3
SHA1sum26a15687aa88c33a0a094330c5607af3c2f9faad
IdentifieriPhone14,5

iOS 26.3.1 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 provides bug fixes for your iPhone

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

https://support.apple.com/100100

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