iOS 13.4.5 (build 17F5044d) is an official Apple over-the-air update for the iPhone 6s+, released on 2020-04-15T17:16:15Z. The update package is 184.53 MB. This is a delta (partial) update that requires 13.4.5 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 83e92b7c17d9e5409435af3eabc4c53e07f42f5e.zip.