iOS 26.3.1 (23D8133) for iPhone 17 Pro Max

✓ 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
FilenameiPhone18,2_26.3.1_23D8133_Restore.ipsw
Filesize10 GiB
SHA256sumb76c889d9aada7859a181848fbc04fc9a35f1f946b82e9ea7f081a034bcaa741
MD5sumd76258a3cd8740f668815cf4b89a9970
SHA1sum91e56c4620ec6f1a878cc7dc68157a96a21a1fe0
IdentifieriPhone18,2

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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