iOS 9.9.16.5 (build 20F66) is an official Apple over-the-air update for the iPhone 8 Plus (GSM), released on 2023-05-18T17:13:38Z. The update package is 4.48 GB. This is a delta (partial) update that requires 12.0.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 54b6e8e3205e4baecf4fe12b6ff55f81d2a78798.zip.