iPadOS 9.9.12.1 (build 16B5059d) is an official Apple over-the-air update for the iPad Pro 12.9-inch (WiFi), released on 2018-09-18T17:20:12Z. The update package is 2.05 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: d5fe131e109cd262846d17dc714b452d5ee802ab.zip.