iPadOS 12.1.1 (build 16C50) is an official Apple over-the-air update for the iPad mini 4 (WiFi), released on 2018-12-05T18:08:10Z. The update package is 1.23 GB. This is a delta (partial) update that requires 11.2.6 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: f32f06ac9a74375139321d8dc797ab85e696fff0.zip.