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 331.43 MB. This is a delta (partial) update that requires 12.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: b94f811b63236d792877e0f37e2fe6cc60bb127e.zip.