iPadOS 9.9.11.1 (build 15B93) is an official Apple over-the-air update for the iPad Air (China), released on 2017-10-23T17:01:38Z. The update package is 1.29 GB. This is a delta (partial) update that requires 9.2 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: e783b6a0b25ceb529f3b43d7ab8a3fd4df50e0e3.zip.