iOS 9.9.16.4.1 (build 20E252) is an official Apple over-the-air update for the iPhone 8 Plus (GSM), released on 2023-04-07T17:13:39Z. The update package is 4.47 GB. This is a delta (partial) update that requires 11.0.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: a321d18bb4577d570373d6aff0b641e526fb2d5f.zip.