iPadOS 11.1 (build 15B101) is an official Apple over-the-air update for the iPad Pro 2 (12.9-inch, Cellular), released on 2017-10-31T16:59:38Z. The update package is 1.21 GB. This is a delta (partial) update that requires 10.3.2 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 859cfee315bce87589c8ae5a7f36d7374250d54a.zip.