iPadOS 11.1.2 (build 15B202) is an official Apple over-the-air update for the iPad Air (WiFi), released on 2017-11-16T21:14:28Z. The update package is 159.57 MB. This is a delta (partial) update that requires 11.0 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: c0e7e6a8c73aec8c7d6c1400d8997a1320f4c0c9.zip.