iPadOS 11.1.1 (build 15B150) is an official Apple over-the-air update for the iPad Air 2 (Cellular), released on 2017-11-09T18:07:38Z. The update package is 163.71 MB. This is a delta (partial) update that requires 11.0.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 93b3f200e099ee546e5ae1b0259bbea4ae0113a9.zip.