iPadOS 12.1 (build 16B5068i) is an official Apple over-the-air update for the iPad Pro 12.9-inch (Cellular), released on 2018-10-02T17:11:49Z. The update package is 259.99 MB. This is a delta (partial) update that requires 12.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: b84d78e3b2cc3be5768828ec9fe0a0083ff2dd62.zip.