iPadOS 8.3 (build 12F5069) is an official Apple over-the-air update for the iPad Air 2 (Cellular), released on 2015-04-08T17:56:03Z. The update package is 1.5 GB. This is a delta (partial) update that requires 8.3 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 654f1c516ffdfa269769d5564d3f1a2c364ca04b.zip.