Download iOS 12.5 (16H20) 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 12.5
Release Date 2020-12-14
Update Date 2020-12-11
Sha1sum
af8fbe97b74126187f0151603e1e3810c6335a1a
Sha256sum
d58b3c67d0f3819a1daa1ffb89f99916370c794bfab05bf313e025a994e0a7a4
md5sum
78cfa54b7525b27895def56c73f0985f
Size 2.97 GB
FileName
iPhone_5.5_12.5_16H20_Restore.ipsw
Status

Download IPSW (2.97GB) Check device info
Release Notes

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

iOS 12.5 lets you opt-in to the COVID-19 Exposure Notifications system for your iPhone. System availability depends on support from your local public health authority. For more information see covid19.apple.com/contacttracing

This release also provides 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