iPadOS 12.1.3 (build 16D39) is an official Apple over-the-air update for the iPad 6 (Cellular), released on 2019-01-22T18:08:27Z. The update package is 229.06 MB. This is a delta (partial) update that requires 12.1.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 3303944cfb1c7c0848be5a5f75f3349e9433a293.zip.