iPadOS 9.3 (build 13E233) is an official Apple over-the-air update for the iPad mini 3 (Cellular), released on 2016-03-21T18:56:02Z. The update package is 441.12 MB. This is a delta (partial) update that requires 9.0.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 40cc88b071a5404fab0391be14ea0b7678b7b1e6.zip.