Download iOS 11.1.2 (15B202) for iPhone 8 Plus (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 iPhone10,5
iOS Version 11.1.2
Release Date 2017-11-16
Update Date 2017-11-15
Sha1sum
af27198fad97fc22445f22e5f7214e1aea07b817
Sha256sum
c5d9ab14e30f74b36091b1bb3b273e41457a3eaa617e5b585b6572a900d38a0f
md5sum
ec3659231ba00d23858fe6b450d643b2
Size 2.66 GB
FileName
iPhone10,5_11.1.2_15B202_Restore.ipsw
Status

Download IPSW (2.66GB) Check device info
Release Notes

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

iOS 11.1.2 includes bug fixes for your iPhone and iPad. This update: