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 iPhone7,2
iOS Version 12.4.5
Release Date 2020-01-28
Update Date 2020-01-17
Sha1sum
85e32824e332765807ab69715566d540998e9a85
Sha256sum
91488e7714327bd13b7b86be8c2b6b2992209d130168e2fa80900a68e6e4bfd1
md5sum
e09ff467e4e562b6f580e5bd3cfe7aa1
Size 2.83 GB
FileName
iPhone_4.7_12.4.5_16G161_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

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