Download iOS 11.4.1 (15G77) for iPhone 6s+

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 iPhone8,2
iOS Version 11.4.1
Release Date 2018-07-09
Update Date 2018-06-30
Sha1sum
06dc5df272b54c6617d54f8095461ebfd419af70
Sha256sum
2246ce8f759f66db2b9a01cc4e4be1b709eba1807197a7fb89b8ae324369c86c
md5sum
1f323d846007af8078847628bf9239ba
Size 2.73 GB
FileName
iPhone_5.5_11.4.1_15G77_Restore.ipsw
Status

Download IPSW (2.73GB) Check device info
Release Notes

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

iOS 11.4.1 includes bug fixes and improves the security of your iPhone or iPad. This update:

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

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