iPadOS 9.9.15.1 (build 19B74) is an official Apple over-the-air update for the iPad Pro 12.9-inch (WiFi), released on 2021-10-25T17:10:13Z. The update package is 3.88 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: 9d205cd0fce21e98a879bd0ef1e287405ae00106.zip.