iOS 9.9.26.3.1 (build 23D9133) is an official Apple over-the-air update for the iPhone 13, released on 2026-03-04T18:52:23Z. The update package is 7.23 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: f6df0fab72e6b88f4ced1be9ddfad03c7e657c5a.zip.