iPadOS 9.9.15.0.1 (build 19A348) is an official Apple over-the-air update for the iPad Air 4 (Cellular), released on 2021-10-01T17:08:00Z. The update package is 4.3 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: 28482aa56b494f74ca535fa566083b8ad4386ff6.zip.