How to Update iOS

Co-authored by Chiara Corsaro

Last Updated: February 20, 2024 Fact Checked

This wikiHow teaches you how to install the latest version of Apple's operating system for your iPhone, iPad, or iPod Touch.

Method 1

Method 1 of 2:

Performing an On-Device Update (Over-the-Air)

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.^{[1]
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Expert Source

Chiara Corsaro
Computer Specialist

Expert Interview. 18 October 2019.}
It's a gray app with gears that's typically located on your home screen.^{[2]
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It's at the top of the menu.^{[4]
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Tap Download and Install or Install Now. If a software update is already downloaded, the Install Now button will appear below the update description.^{[5]
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- You'll need to accept legal agreements before manually downloading the update.
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Enter your passcode if prompted. Enter the passcode you use to unlock your phone.^{[6]
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- Your phone will restart and the update process will begin.
- In some cases, you may have to set up your phone again, although all your apps and data should be intact.

Method 2

Method 2 of 2:

Using iTunes

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1
Connect your device to your computer. Use the USB cable that came with your device.^{[7]
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- Tap Trust on your device's screen if prompted after connecting.
Do so if iTunes doesn't launch automatically when you connect your device.
It may take a moment to appear.
Before updating, it's always advised to create a backup in case something goes wrong. This should only take a minute or two, and will allow you to restore your iOS device along with all your data if an error occurs during the update process, or if you like the old operating system better.^{[8]
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Expert Source

Chiara Corsaro
Computer Specialist

Expert Interview. 18 October 2019.}
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Click on Check for Update. You'll see this on the Summary page after selecting your iOS device.^{[9]
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- You may be prompted to update automatically when you first launch iTunes with your device connected. You'll see a notification if your device is already up to date.
This will download the update to your computer, and apply it to your iOS device. This process may take a while, and you can monitor the progress of the update on your device's screen.^{[10]
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Set up your device. After the update has been installed on your iPhone, iPad, or iPod, you'll need to complete it by entering your passcode or signing in with your Apple ID.
- If you installed a major update, you may be given a brief overview of the changes.
- Remember to turn iCloud Backup on again.^{[11]
  X
  Expert Source
  
  Chiara Corsaro
  Computer Specialist
  
  Expert Interview. 18 October 2019.}

Community Q&A

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Question

How do I update from iOS 7.1.2 to iOS 9?

Community Answer

If you're using an iPhone 4, iOS 7.1.2 is the last available version of iOS. You won't be able to install a newer version of iOS. If you're using an iPhone 4S or newer, follow the instructions above to update.

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Question

Can I upgrade my iPhone 3GS to iOS 7?

Community Answer

No, the latest available version of iOS for the iPhone 3GS is 6.1.6. It is not possible to update to later versions or run apps that require later versions of iOS.

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Question

Can I update my iPhone 4?

Community Answer

The iPhone 4 cannot be updated past iOS 7.1.2. If you want to use a newer version of iOS, you'll need to get a newer iPhone.

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