iPadOS 9.9.12.3 (build 16F156) is an official Apple over-the-air update for the iPad Pro 9.7-inch (WiFi), released on 2019-05-13T17:07:50Z. 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: 48f0db2195b4a6d2d168249a2a88595b21c04d4d.zip.