Download iOS 17.2.1 (21C66) for iPhone 13 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 iPhone14,3
iOS Version 17.2.1
Release Date 2023-12-19
Update Date 2023-12-16
Sha1sum
a173bfb5c1d01ff518058b737137a45377626471
Sha256sum
5afd010177feaee9f124244d33e32f74de2d22dd49b83b62c045c9f942129bca
md5sum
795915d3ed8fb0c0983108cee2db1735
Size 7.29 GB
FileName
iPhone14,3_17.2.1_21C66_Restore.ipsw
Status

Download IPSW (7.29GB) 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