To check the current software version, follow these steps: From the Home screen, tap Settings. Scroll down to Version to view the software version. Download update from Apple You can check for updates and request to download the update from the Apple servers.
To check for updates and download, follow these steps: From the Home Screen, tap Settings. After the device searches for available software updates, it will display the current version. If an update is available, tap Download. After the download has completed, tap Install to update. Manually update over USB using iTunes You can manually update the software using iTunes on a computer with internet access.
To manually update over a USB cable, follow these steps: Connect iPhone to the computer using the included USB cable.
After iTunes opens, select your device when it appears in iTunes under Devices. Click Check for Update in the Summary pane. If an update is available, iTunes prompts you to download and install the update. Do not disconnect your device until the update has finished. To download, follow these steps: If a 'Carrier Settings Update' is available, you will receive a pop-up notification.
If you are experiencing any issues updating and you have access to a computer, attempt to manually update over USB. If you do not have access to a computer, follow these steps: Reset Network Settings From the home screen, tap Settings.