iOS 9.9.17.0 (build 21A329) is an official Apple over-the-air update for the iPhone 12, released on 2023-09-18T17:34:33Z. The update package is 5.79 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: 192037174d489cde28deaef0531ed4eff528979d.zip.