iPadOS 9.9.15.4.1 (build 19E258) is an official Apple over-the-air update for the iPad Pro (10.5-inch, Cellular), released on 2022-03-31T17:14:44Z. The update package is 3.91 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: 80e9959a2e84221e17bba2912df0dea8a34e6d1b.zip.