iOS 13.3 (build 17C5032d) is an official Apple over-the-air update for the iPhone 11 Pro Max, released on 2019-11-05T18:14:16Z. The update package is 639.18 MB. This is a delta (partial) update that requires 13.2 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 59b9e117d6720e8b7881e9f0477e341674ed7fb0.zip.