iPadOS 13.5 (build 17F5054h) is an official Apple over-the-air update for the iPad 6 (WiFi), released on 2020-04-29T17:06:56Z. The update package is 365.25 MB. This is a delta (partial) update that requires 13.4 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 9100b72d8893af67580293bf3da2424ba0e41a8f.zip.