Download iOS 16.3.1 (20D67) for iPhone 11 Pro

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 iPhone12,3
iOS Version 16.3.1
Release Date 2023-02-13
Update Date 2024-06-03
Sha1sum
30a953b9055fc1f390203cad74831ef692aa5710
Sha256sum
5955dbc629a0cfd72367e98736bc9d64d5b231a9458ec6c8b9fa393e67fed308
md5sum
97004452d83432fc627e8b572ad27498
Size 5.86 GB
FileName
iPhone12,3,iPhone12,5_16.3.1_20D67_Restore.ipsw
Status

Download IPSW (5.86GB) Check device info
Release Notes

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

This update provides important bug fixes and security updates for your iPhone including:

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

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