iPadOS 9.9.11.1 (build 15B5078e) is an official Apple over-the-air update for the iPad Air (Cellular), released on 2017-10-09T17:01:57Z. The update package is 1.69 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: c7d3105a70cdaad6977003ba8f88ebf2b227f31e.zip.