iPadOS 9.3.1 (build 13E238) is an official Apple over-the-air update for the iPad mini 3 (Cellular), released on 2016-03-31T16:53:41Z. The update package is 1.18 GB. This is a delta (partial) update that requires 8.1.2 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: da9d797705721d02170eda2f2bd4099d869e3bee.zip.