iPadOS 9.3.1 (build 13E238) is an official Apple over-the-air update for the iPad 2 (GSM), released on 2016-03-31T16:50:56Z. The update package is 255.51 MB. This is a delta (partial) update that requires 9.0.2 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 49bab95bcaf052bb13d98401c071daf6cde3392d.zip.