iPadOS 9.9.12.1 (build 16B5077c) is an official Apple over-the-air update for the iPad Air (Cellular), released on 2018-10-09T17:05:19Z. The update package is 2 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: c75e1be835f9d29c00d8a8f8ded2c321872003eb.zip.