iOS 9.9.16.4.1 (build 20E252) is an official Apple over-the-air update for the iPhone 8 (GSM), released on 2023-04-07T17:13:38Z. The update package is 4.36 GB. This is a delta (partial) update that requires 11.4 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 243416d7b23497614ab189fea58850e56abe5132.zip.