iPadOS 11.3 (build 15E5201e) is an official Apple over-the-air update for the iPad Air (Cellular), released on 2018-03-05T18:13:50Z. The update package is 259.47 MB. This is a delta (partial) update that requires 11.3 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: ff814d353be93bb60510e0f7d4461fe2fa33a944.zip.