Download iOS 12.5.4 (16H50) 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 12.5.4
Release Date 2021-06-14
Update Date 2021-06-09
Sha1sum
6b11f68ad26960fd9f1d67241788399ebbbd3217
Sha256sum
8116ebeac66b57c8a46ed430832a3ccf35ec5a2a1df1e6f89a856f271641dacd
md5sum
f17ff58de9abe2241e6d13aeb872b1ca
Size 2.82 GB
FileName
iPhone_4.7_12.5.4_16H50_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