iPadOS 9.9.12.1 (build 16B5084a) is an official Apple over-the-air update for the iPad Pro (10.5-inch, WiFi), released on 2018-10-15T17:03:13Z. The update package is 2.19 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: 19ff79505ea9b0136a2a835cc122177fe6b62c7c.zip.