Download iOS 16.3.1 (20D67) for iPhone 13

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 iPhone14,5
iOS Version 16.3.1
Release Date 2023-02-13
Update Date 2024-06-03
Sha1sum
55a6906c925acdae4945a99b1a569fe3f23f4559
Sha256sum
33f51440a4158f05394e69bb54c9ab68b494c92324fd318c1de98e8947460bcc
md5sum
577c53e099f6bb7809775405ad5dc8a0
Size 6.03 GB
FileName
iPhone14,5_16.3.1_20D67_Restore.ipsw
Status

Download IPSW (6.03GB) 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