iPadOS 12.1.1 (build 16C50) is an official Apple over-the-air update for the iPad mini 4 (WiFi), released on 2018-12-05T18:08:08Z. The update package is 1.58 GB. This is a delta (partial) update that requires 10.3.3 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 62d09c77db6ea702fadf486433dc02461b2d1724.zip.