Download iOS 16.3.1 (20D67) for iPhone 14 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 iPhone15,3
iOS Version 16.3.1
Release Date 2023-02-13
Update Date 2023-02-09
Sha1sum
fbfa4a738e8d7b5e9ac5bdef7617569ab05444ee
Sha256sum
c63bd459a6ecaf5f78e53c546aa318ec611963b35c5bcc10d577cc67e8a4e278
md5sum
53668e89b18706179d4967c77d7f8696
Size 6.25 GB
FileName
iPhone15,3_16.3.1_20D67_Restore.ipsw
Status

Download IPSW (6.25GB) 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