iOS 13.3 (build 17C5032d) is an official Apple over-the-air update for the iPhone 6s+, released on 2019-11-05T18:14:18Z. The update package is 321.28 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: 6d91276c1541ed2411cef2a0aa18bd56ff8a4dc7.zip.