iPadOS 9.3 (build 13E233) is an official Apple over-the-air update for the iPad 2 (GSM), released on 2016-03-21T18:55:28Z. The update package is 822.11 MB. This is a delta (partial) update that requires 8.1.3 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: d81237a47dedd3cc5520ad99b29512d4ad730046.zip.