iPadOS 12.1.1 (build 16C50) is an official Apple over-the-air update for the iPad mini 3 (WiFi), released on 2018-12-05T18:07:48Z. The update package is 1.6 GB. This is a delta (partial) update that requires 10.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 4737d633d06cdbe0227cafe233af0998cf965062.zip.