iPadOS 9.3 (build 13E5181f) is an official Apple over-the-air update for the iPad 2 (CDMA), released on 2016-01-14T18:01:06Z. The update package is 19.38 MB. This is a delta (partial) update that requires 9.3 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 72ccbe5b5a1514cbf6f56e608d047ecf0d33d00c.zip.