iPadOS 12.1.3 (build 16D39) is an official Apple over-the-air update for the iPad Air 2 (Cellular), released on 2019-01-22T18:05:58Z. The update package is 1.6 GB. This is a delta (partial) update that requires 10.2.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: f6859010be07ae29f87b5cd902815f8d4af4fb44.zip.