iPadOS 12.1.1 (build 16C50) is an official Apple over-the-air update for the iPad Air 2 (WiFi), released on 2018-12-05T18:08:20Z. 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: ff358217ec3f80265912b31cddb64fc113dd1190.zip.