iPadOS 11.3 (build 15E216) is an official Apple over-the-air update for the iPad Air 2 (WiFi), released on 2018-03-29T17:09:30Z. The update package is 705.36 MB. This is a delta (partial) update that requires 11.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 6b7594962efa4510bc7334a84cd26790b9cfedb5.zip.