iOS 13.4 (build 17E5241d) is an official Apple over-the-air update for the iPhone 11 Pro Max, released on 2020-02-26T18:17:55Z. The update package is 320.76 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: 2fce7e080ba8e69293ea2cbb20fe20edaa696288.zip.