Download iOS 17.2.1 (21C66) for iPhone 15 Plus

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 iPhone15,5
iOS Version 17.2.1
Release Date 2023-12-19
Update Date 2023-12-16
Sha1sum
32db72eeedcb7dad61d942a8bd64afbd27bc078c
Sha256sum
d6a4d73b7cc090841c60782fe892041fc26b62294f6b3de6a3af322c5d0085a8
md5sum
85205155a1ac47c54a57c6e5871447a0
Size 7.40 GB
FileName
iPhone15,5_17.2.1_21C66_Restore.ipsw
Status

Download IPSW (7.40GB) 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