iPadOS 8.3 (build 12F5061) is an official Apple over-the-air update for the iPad Air (Cellular), released on 2015-03-24T16:54:09Z. The update package is 130.43 MB. 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: c9c7702c5f8daaa9280dda218240970cc64ebf16.zip.