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 iPhone7,2
iOS Version 12.5
Release Date 2020-12-14
Update Date 2020-12-11
Sha1sum
a68e32065311efa41c3a6f9988387fb1672efad7
Sha256sum
dc01c1e1eebe623d470a92d8d096463578f310c2891f4e7496a2372e30dc0c1e
md5sum
2bb38eb69cf6476bc427834f81ae607a
Size 2.82 GB
FileName
iPhone_4.7_12.5_16H20_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

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