iPadOS 9.9.12.1.1 (build 16C5043b) is an official Apple over-the-air update for the iPad Air 2 (Cellular), released on 2018-11-07T21:08:34Z. The update package is 2.05 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: 2eaf53b41888295e92992b91b7b1182f12456257.zip.