iOS 17.2.1 (21C66) for iPhone 14 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
FilenameiPhone15,3_17.2.1_21C66_Restore.ipsw
Filesize7.4 GiB
SHA256sum956f4a84ba1de91e9fdb8c4c3f6f2ad5adbefcc4217be62f67a889381258379a
MD5sumad77a9838c94d25fe94c3382d8d319e4
SHA1sum636870f78995cb5aacd98a6e32f49b03c4035860
IdentifieriPhone15,3

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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