iOS 13.3 (build 17C5032d) is an official Apple over-the-air update for the iPhone 6s, released on 2019-11-05T18:14:16Z. The update package is 318.83 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: 8a51830daf09cf1c360830229084b43f4fb5c6a4.zip.