iOS 9.9.26.3.1 (build 23D8133) is an official Apple over-the-air update for the iPhone 13 Pro Max, released on 2026-03-04T19:00:52Z. The update package is 7.32 GB. This is a full OTA update that can be applied from any compatible base version. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: a2ddac3bea1a3c4fd2c3e81971f147904c4093f9.zip.