Download iOS 11.4 (15F79) for iPhone 7 (GSM)

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 iPhone9,3
iOS Version 11.4
Release Date 2018-05-29
Update Date 2018-05-18
Sha1sum
e29b93e01b0cbb509080d6fac0318346db970d80
Sha256sum
8590c0dfe9f64a344211a629a1f7ed7eda936a2c88e52428bf585774a937196b
md5sum
b2eb5d9db1632cfc3edf7abec6930776
Size 2.72 GB
FileName
iPhone_4.7_P3_11.0_11.4_15F79_Restore.ipsw
Status

Download IPSW (2.72GB) Check device info
Release Notes

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

iOS 11.4 includes AirPlay 2 multi-room audio, support for HomePod stereo pairs, and Messages in iCloud. This update also includes bug fixes and improvements.

AirPlay 2

HomePod stereo pair

Messages in iCloud

Other improvements and fixes

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

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