iPadOS 9.9.15.8.4 (build 19H390) is an official Apple over-the-air update for the iPad Air 2 (WiFi), released on 2025-03-31T17:29:59Z. The update package is 3.66 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: abc40391dce70e6b6516ac8761cef9b233596741.zip.