iPadOS 12.1 (build 16B5089b) is an official Apple over-the-air update for the iPad Air 2 (WiFi), released on 2018-10-22T17:01:32Z. The update package is 133.59 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: 2d85b84556729d2741aff706a77797ff74ce5763.zip.