iPadOS 13.3.1 (build 17D5044a) is an official Apple over-the-air update for the iPad 6 (Cellular), released on 2020-01-14T18:20:49Z. The update package is 189.56 MB. This is a delta (partial) update that requires 13.3.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 38f05731558d2b32510603551c2bdb22a1951cb3.zip.