iPadOS 8.4.1 (build 12H321) is an official Apple over-the-air update for the iPad Air 2 (Cellular), released on 2015-08-13T18:05:12Z. The update package is 1.5 GB. This is a delta (partial) update that requires null already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 772991a7ba0d18e9e54dae95de87fa29f0f01a79.zip.