Download iOS 12.4.3 (16G130) 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 12.4.3
Release Date 2019-10-28
Update Date 2019-10-17
Sha1sum
e8d9e8a052e9a37e8b40c7b9e540244a582042a8
Sha256sum
0952db58c4823ece1cde5a70b7c2dbfb444f8f08d0985c6467b381d6dcc2359c
md5sum
9e2ee6a05ee1ec3ceb1bb06a1544fc89
Size 2.84 GB
FileName
iPhone_4.7_12.4.3_16G130_Restore.ipsw
Status

Download IPSW (2.84GB) Check device info
Release Notes

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

iOS 12.4.3 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