Download iOS 12.4 (16G77) 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
Release Date 2019-07-22
Update Date 2019-07-15
Sha1sum
e435aa95763167106707e5d6534a4dcb66408f18
Sha256sum
7b4c00768e9179bb69120c4dab8b5da1d73a0e2fa9bacf40cd0cee8fe4543cc4
md5sum
75279e6f2f850ba825addfe590afb8ba
Size 3.12 GB
FileName
iPhone_5.5_12.4_16G77_Restore.ipsw
Status

Download IPSW (3.12GB) Check device info
Release Notes

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

iOS 12.4 introduces iPhone migration to directly transfer data from an old iPhone to a new iPhone, includes enhancements to Apple News+ and improves the security of your iPhone or iPad. This update:

iPhone migration

Apple News

Other improvements and fixes

This release also includes support for HomePod in Japan and Taiwan.

For information on the security content of Apple software updates, please visit this website:

https://support.apple.com/kb/HT201222