iPadOS 12.1.1 (build 16C5036c) is an official Apple over-the-air update for the iPad 5 (WiFi), released on 2018-10-31T17:03:43Z. The update package is 308.3 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: 104d5eed7bcc094601a5c3fe9e7addce574de14a.zip.