iOS updates can be installed wirelessly (a technique known as over-the-air, or OTA, updating).
To update iOS:
On the iPhone Home screen, tap theSettingsapp.
Scroll down, then tapGeneral.
Lifewire
The machine checks to see if there’s an update.
If there is, it reports what it is and what the update adds to the rig.
TapDownload and Installto begin installing the iPhone software update.
Lifewire
If the phone is protected with apasscode, enter the passcode to begin the download.
A blue progress bar moves across the screen.
The screen goes dark, then displays the Apple logo.
A progress bar shows the status of the update.
When the iOS update finishes, the iPhone restarts and displays a completion notice.
You may also receive apush notification.
Another result of a failed upgrade is awhite screen of death.
you might may run intoerror 3194.
