iOS 12.1.1 (build 16C50) is an official Apple over-the-air update for the iPhone 6+, released on 2018-12-05T18:10:35Z. The update package is 407.74 MB. This is a delta (partial) update that requires 12.0 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: e6b7654599a44994a54e4c476a0171c9b2673c90.zip.