Download iOS 17.2.1 (21C66) for iPhone 15 Pro Max

You will have to note that you can only restore signed IPSW firmware files using iTunes or 3utools.

❌ This IPSW firmware is not being Signed by Apple

Firmware Identifier iPhone16,2
iOS Version 17.2.1
Release Date 2023-12-19
Update Date 2023-12-16
Sha1sum
100203f832f028723a23b72730e14868b5bd2c48
Sha256sum
9cd3d719754b848f56b702fe8c9621458671d7fd590d0a6f674340e7fa83ac4f
md5sum
4c0a584f14b717905dfed5d84b0a9697
Size 7.57 GB
FileName
iPhone16,2_17.2.1_21C66_Restore.ipsw
Status

Download IPSW (7.57GB) Check device info
Release Notes

It should be noted that these are the official release notes for the from Apple

Phone

Messages

FaceTime

StandBy

Widgets

AirDrop

Keyboard

Safari and Passwords

Music

AirPlay

AirPods

Maps

Siri

Visual Look Up

Health

Privacy

Accessibility

This release also includes other features and improvements:

Some features may not be available for all regions or on all Apple devices. For more information, please visit this website:

https://www.apple.com/ios/ios-17

Some features may not be available for all regions or on all iPhone models. For information on the security content of Apple software updates, please visit this website:

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