iOS 9.9.17.4.1 (build 21E236) is an official Apple over-the-air update for the iPhone XR, released on 2024-03-21T17:22:03Z. The update package is 5.46 GB. This is a delta (partial) update that requires 12.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: bfcd8684d5f6d6852ac2a43b032bfa9de52e8e1a.zip.