iPadOS 11.1 (build 15B93) is an official Apple over-the-air update for the iPad Air 2 (Cellular), released on 2017-10-23T17:04:43Z. The update package is 164.11 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: e1b379d5276456389b6ec574a0f56b4d098189e4.zip.