iPadOS 9.9.11.1 (build 15B5066f) is an official Apple over-the-air update for the iPad Air (Cellular), released on 2017-09-27T16:55:34Z. The update package is 1.7 GB. This is a full OTA update that can be applied from any compatible base version. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: eaf88de3f457b966b03711fd953f678ea7fb9220.zip.