iPadOS 11.1.2 (build 15B202) is an official Apple over-the-air update for the iPad Air (Cellular), released on 2017-11-16T21:14:47Z. The update package is 1016.36 MB. This is a delta (partial) update that requires 10.3.3 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 30943c3acfd1d786019fd9861b27eca3cd2c7962.zip.