iPadOS 9.9.12.0 (build 16A6366) is an official Apple over-the-air update for the iPad Air (WiFi), released on 2018-09-12T19:03:55Z. The update package is 1.99 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: c94da8e7c4398361b0090d8bd9033ff071c187bf.zip.