iOS 12.1.1 (build 16C5043b) is an official Apple over-the-air update for the iPhone 6, released on 2018-11-07T21:09:06Z. The update package is 298.93 MB. This is a delta (partial) update that requires 12.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: c3535ff5476454c03232fbe9c5be4ac5a427db6b.zip.