iPadOS 11.1 (build 15B93) is an official Apple over-the-air update for the iPad Air (China), released on 2017-10-23T17:01:54Z. The update package is 26.39 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: 762b8c4779c83506e26008cd2b1fc024534ee566.zip.