A new version of the iOS for your device brings new features, bug fixes, and exciting changes to the way you use your phone. Upgrading to a new version of the iOS used to mean that you had to be in front of your computer, had to connect your iOS device to it, download the update to your computer and then install the update via syncing with iTunes. But ever since iOS 5, that's not true anymore. Now you can install iPhone software updates wirelessly.

Apple security updates - Apple Support

Download iPhone Software (IPSW firmware files)

Posted by 2018 article