iPadOS 9.3.1 (build 13E238) is an official Apple over-the-air update for the iPad Air 2 (WiFi), released on 2016-03-31T16:54:09Z. The update package is 1.16 GB. This is a delta (partial) update that requires 8.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: e66d9fe3be7d4cdd97f4a30e865d6ace6d38f685.zip.