iPadOS 13.3.1 (build 17D5026c) is an official Apple over-the-air update for the iPad 5 (WiFi), released on 2019-12-17T18:12:55Z. The update package is 211.52 MB. This is a delta (partial) update that requires 13.3 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: a5aadbfb2175902f4498832b825fb5956fbd44d8.zip.