iPadOS 12.1.1 (build 16C50) is an official Apple over-the-air update for the iPad mini 3 (Cellular), released on 2018-12-05T18:07:55Z. The update package is 1.25 GB. This is a delta (partial) update that requires 11.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 052d278be1825e419b1ee1e8fbf99a317114d784.zip.