iPadOS 9.9.15.3.1 (build 19D52) is an official Apple over-the-air update for the iPad Air 4 (Cellular), released on 2022-02-10T18:14:22Z. The update package is 4.18 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: df24cb53edb0bc2cf5fa16358d502ac510e41b62.zip.