Download iOS 12.5.5 (16H62) 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 12.5.5
Release Date 2021-09-23
Update Date 2021-09-20
Sha1sum
215fe075fa1c21967d6631ccd2318972cc64b8a4
Sha256sum
7b992fcf42d31f5a8aa95e89837e4bcf28ec63ee77f5bc38b8e7d0f0abc1961f
md5sum
e6ebfdffe5c823b1528f66727f9b435e
Size 2.83 GB
FileName
iPhone_4.7_12.5.5_16H62_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 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