Download iOS 12.4.1 (16G102) 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 12.4.1
Release Date 2019-08-26
Update Date 2019-08-22
Sha1sum
671863b1a34cb4d8abc44919679c645f0500486d
Sha256sum
3cfabd97751d8140fe454ac141ae29d629dba8c7def01c763288375e9cb75976
md5sum
8a374df4132aedddd0207c8978080b35
Size 3.12 GB
FileName
iPhone_5.5_12.4.1_16G102_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 12.4.1 provides important security and stability 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