iPadOS 10.3.1 (build 14E304) is an official Apple over-the-air update for the iPad Pro 12.9-inch (WiFi), released on 2017-04-03T17:00:15Z. The update package is 26.71 MB. This is a delta (partial) update that requires 10.3 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 61e2f73b06b6295292d1671a242caf96aacc96f2.zip.