iPadOS 11.1 (build 15B93) is an official Apple over-the-air update for the iPad Air (China), released on 2017-10-23T17:01:52Z. The update package is 159.52 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: ed9d94606bec1724b7868a0d4591aadd42f6596c.zip.