iOS 13.3 (build 17C5046a) is an official Apple over-the-air update for the iPhone SE, released on 2019-11-20T18:04:28Z. The update package is 328.66 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: 4df0f198ddf2485b942c80bfca1273b30d4253cd.zip.