iPadOS 14.8.1 (build 18H107) is an official Apple over-the-air update for the iPad Pro 4 (12.9-inch, Cellular), released on 2021-10-26T17:00:00Z. The update package is 172.5 MB. This is a delta (partial) update that requires 14.8 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: f9acecb0da237cc1546558d9292ed23b352d6bdc.zip.