iPadOS 9.3 (build 13E233) is an official Apple over-the-air update for the iPad 2 (CDMA), released on 2016-03-21T18:55:29Z. The update package is 786.54 MB. This is a delta (partial) update that requires 8.2 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 28a91ab4ad2247b29d36ff4b778d17cff99662d4.zip.