iPadOS 11.1.2 (build 15B202) is an official Apple over-the-air update for the iPad Air (WiFi), released on 2017-11-16T21:14:29Z. The update package is 36.38 MB. This is a delta (partial) update that requires 11.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 18ed822dd069e9323a6a65f6b4806477d3f07498.zip.