iPadOS 10.3.1 (build 14E304) is an official Apple over-the-air update for the iPad Pro 9.7-inch (WiFi), released on 2017-04-03T17:00:13Z. The update package is 717.4 MB. This is a delta (partial) update that requires 10.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 8a0b7b46d99f4db1f730d91ea41e27b32d533696.zip.