iPadOS 9.9.17.5.1 (build 21F6090) is an official Apple over-the-air update for the iPad Air 4 (WiFi), released on 2024-05-20T17:22:15Z. The update package is 5.43 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: e867e9dcb54e83976e7c205a4b576fae169131b9.zip.