iOS 13.4.5 (build 17F5034c) is an official Apple over-the-air update for the iPhone 6s+, released on 2020-03-31T17:20:27Z. The update package is 312.04 MB. This is a delta (partial) update that requires 13.4 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 0f8a0c7983c3f3ed5e1fb74520ad74d8f5c90b75.zip.