iPadOS 8.4.1 (build 12H5321) is an official Apple over-the-air update for the iPad Air (Cellular), released on 2015-08-13T18:05:02Z. The update package is 1.49 GB. This is a delta (partial) update that requires 8.4.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: be9a125d3c1df343cddf7aad724ed1d3ab949256.zip.