Download iOS 11.2.2 (15C202) 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 11.2.2
Release Date 2018-01-08
Update Date 2018-01-03
Sha1sum
d4aac68508ebc25aa3731eb0713c483184553626
Sha256sum
4918f81a44c6cd49ee682d10a18c1cef8ecc549a33679f904a4c37b01fbf629e
md5sum
59463d367bba8e3b9f9438d1f29ce082
Size 2.61 GB
FileName
iPhone_5.5_11.2.2_15C202_Restore.ipsw
Status

Download IPSW (2.61GB) Check device info
Release Notes

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

iOS 11.2.2 provides a security update 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