Download iOS 12.5.1 (16H22) 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 not being Signed by Apple

Firmware Identifier iPhone7,2
iOS Version 12.5.1
Release Date 2021-01-11
Update Date 2021-01-08
Sha1sum
afab6da896238ca5e3dd808121d770d5ea4d1078
Sha256sum
ca18b1c4586630d50effe03af9879a7f2aefd0a9ce3d9c4208154e495b2d79f6
md5sum
7edb82991c5af06d67df71e85b358606
Size 2.83 GB
FileName
iPhone_4.7_12.5.1_16H22_Restore.ipsw
Status

Download IPSW (2.83GB) Check device info
Release Notes

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

This update fixes an issue where Exposure Notifications could incorrectly display logging profile language.

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

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