Download iOS 12.5.7 (16H81) for iPhone 6

You will have to note that you can only restore signed IPSW firmware files using iTunes or 3utools.

✅ This IPSW firmware is Signed

Firmware Identifier iPhone7,2
iOS Version 12.5.7
Release Date 2023-01-23
Update Date 2023-01-14
Sha1sum
2f3a6f9414db20aa02270e5e4f2606535ee013a9
Sha256sum
7c10ff0e4cdbe24f33012e47e8458a8ae8c858f2e3dbfce766c196f5d229cadb
md5sum
e35620a996dc63f4edf58924cc006e34
Size 2.82 GB
FileName
iPhone_4.7_12.5.7_16H81_Restore.ipsw
Status

Download IPSW (2.82GB) Check device info
Release Notes

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

This update provides important security updates and is recommended for all users.

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

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