iPadOS 12.1.1 (build 16C50) is an official Apple over-the-air update for the iPad mini 4 (Cellular), released on 2018-12-05T18:08:18Z. The update package is 382.81 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: 17f625dd4057f8bafc747a5145b560f947925e7e.zip.