iPadOS 12.1.1 (build 16C50) is an official Apple over-the-air update for the iPad mini 2 (Cellular), released on 2018-12-05T18:07:35Z. The update package is 350.81 MB. This is a delta (partial) update that requires 12.0.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: fcf22052f67bafb1d35abdeffa84aa76d8727538.zip.