iPadOS 9.9.17.5.1 (build 21F90) is an official Apple over-the-air update for the iPad Air 3 (Cellular), released on 2024-05-20T17:22:23Z. The update package is 5.49 GB. This is a delta (partial) update that requires 12.1.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 8c0101ec5935ff799138eeb9de7454009ebec336.zip.