iOS 13.3 (build 17C5046a) is an official Apple over-the-air update for the iPhone XS Max, released on 2019-11-20T18:04:20Z. The update package is 178.08 MB. This is a delta (partial) update that requires 13.3 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 34151cff6c94f7d56909ea7ec8cc01c73963c023.zip.