iPadOS 12.1.3 (build 16D5039a) is an official Apple over-the-air update for the iPad Air 2 (Cellular), released on 2019-01-10T18:08:37Z. The update package is 34.38 MB. This is a delta (partial) update that requires 12.1.3 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 4e3524075e7113b230a337213f550fa19797f340.zip.