To download iOS 18.4 beta 1, either go to Settings > General > Software Update on your device to grab OTA update, or visit ...

What's New in iOS 9.3.5: iOS 9.3.5 provides an important security update for your iPhone or iPad and is recommended for all users.

- iPhone 3GS running iOS 4 GM or iPhone OS 3.1.2 (mine was running a jailbroken copy of iOS 4 GM) with old bootrom. 05.13.04 baseband. First, download Pwangetool and the .ipsw firmware file to your ...

To update your iPhone you will need to download the latest firmware file (IPSW). iOS 9.3.5 is an important security update that fixes a spyware flaw.