iPadOS 11.1.1 (build 15B150) is an official Apple over-the-air update for the iPad 5 (Cellular), released on 2017-11-09T18:07:46Z. The update package is 1021.92 MB. This is a delta (partial) update that requires 10.3.3 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 24b9962c1dd5156bbcfb23509cfe19b8fbed718c.zip.