iOS 26.3.1 (23D8133) for iPhone 15 Plus

✓ 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
FilenameiPhone15,5_26.3.1_23D8133_Restore.ipsw
Filesize9.4 GiB
SHA256sum6c3fda7ea42ed45313ff8b4a8f8587953d709cad0bb043859c6ff0effa648dd2
MD5sum40e3d08582b0709550c0402a7ea32789
SHA1sum1fe62de606301df4850851ea1f61f3db97faa835
IdentifieriPhone15,5

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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