iOS 17.2.1 (21C66) for iPhone 15 Pro Max

✗ This firmware is not signed. This means you cannot restore to it in Finder, the Apple Devices app, iTunes, or idevicerestore.

Release DateDecember 19, 2023
Upload DateDecember 16, 2023
FilenameiPhone16,2_17.2.1_21C66_Restore.ipsw
Filesize7.6 GiB
SHA256sum9cd3d719754b848f56b702fe8c9621458671d7fd590d0a6f674340e7fa83ac4f
MD5sum4c0a584f14b717905dfed5d84b0a9697
SHA1sum100203f832f028723a23b72730e14868b5bd2c48
IdentifieriPhone16,2

iOS 17.2.1 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 important bug fixes and is recommended for all users.

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

https://support.apple.com/kb/HT201222

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