iPadOS 9.9.17.3 (build 21D50) is an official Apple over-the-air update for the iPad Pro 4 (12.9-inch, Cellular), released on 2024-01-22T18:21:36Z. The update package is 5.65 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: c75b059a81289efd01a8cabcbd0657dc17db40b8.zip.