iPadOS 8.3 (build 12F69) is an official Apple over-the-air update for the iPad Air (Cellular), released on 2015-04-08T17:56:08Z. The update package is 700.09 MB. This is a delta (partial) update that requires 8.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: dbba5dac41b4b7101234db34ee43fbbb1bf8d8cb.zip.