iPadOS 9.3 (build 13E233) is an official Apple over-the-air update for the iPad 2 (Mid 2012), released on 2016-03-21T18:55:29Z. The update package is 826.57 MB. This is a delta (partial) update that requires 8.0 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 15d486622223bbe239939e869da6471650d3ec46.zip.