iPadOS 9.9.13.1 (build 17A5831c) is an official Apple over-the-air update for the iPad Pro 12.9-inch (WiFi), released on 2019-09-04T17:05:44Z. The update package is 2.7 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: 6894989460bd09c3d9e592e42eb88781d30a6585.zip.