iPadOS 13.5.5 (build 17G5035d) is an official Apple over-the-air update for the iPad Air 3 (Cellular), released on 2020-06-01T18:07:33Z. The update package is 211.33 MB. This is a delta (partial) update that requires 13.5 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 5b944c7f181d0fb9461594a03b2aa8353ab21f16.zip.