Download iOS 12.4.5 (16G161) 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 iPhone7,1
iOS Version 12.4.5
Release Date 2020-01-28
Update Date 2020-01-17
Sha1sum
352def2af5d65f7053a10de3c5e49a835be9c769
Sha256sum
a88ebf08f1953c958a1f54125bddbcfa2706292a7bf2e4f57c05446c63a9eaec
md5sum
98041c241e57a72d7e94b3fb76b9aff2
Size 2.98 GB
FileName
iPhone_5.5_12.4.5_16G161_Restore.ipsw
Status

Download IPSW (2.98GB) Check device info
Release Notes

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

iOS 12.4.5 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