iOS 9.9.16.4 (build 20E247) is an official Apple over-the-air update for the iPhone 8 (GSM), released on 2023-03-27T17:12:25Z. The update package is 4.36 GB. This is a delta (partial) update that requires 11.3.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: f74dd346cd66f1fe2182746c288c5f1ed7e3159c.zip.