Download iOS 16.3.1 (20D67) for iPhone 12

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 iPhone13,2
iOS Version 16.3.1
Release Date 2023-02-13
Update Date 2023-02-09
Sha1sum
58eb6a0d74054ec0eeb31e699d341f6adbd332a7
Sha256sum
2f911bbf51757d52c7a184c1f5e933874916d4df371b0c1538771699cbdd4389
md5sum
e8c91ca838becf7197f430e990fc54dc
Size 6.13 GB
FileName
iPhone13,2,iPhone13,3_16.3.1_20D67_Restore.ipsw
Status

Download IPSW (6.13GB) 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