iPadOS 9.3.1 (build 13E238) is an official Apple over-the-air update for the iPad 2 (CDMA), released on 2016-03-31T16:51:03Z. The update package is 786.48 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: dcff98e161e8bff805f204fc0ee8ee4688034ebd.zip.