How To Update Iphone 4 To Ios 9

Learn how to upgrade your iPhone, iPad, or iPod touch to the latest version of iOS or iPadOS wirelessly or using your computer.

On iPhone, iPad, or iPod touch, you can upgrade your iOS or iPadOS to the latest version wirelessly. If the device does not display information about the availability of the update, try updating the software manually using a computer.

Preparing to Upgrade. Updating your device wirelessly

If a message appears indicating that an update is available, click Install. You can also do the following:

  1. Put the device on charge and connect to the Internet via Wi-Fi.
  2. Go to the Settings menu Basic, and then click Software Update.
  3. Click “Download and Install.” If a message appears stating that you need to temporarily uninstall applications, because updating the software requires more free space, click Continue or Cancel. After updating iOS or iPadOS, it will reinstall the remote applications. Learn what to do when you select Cancel.
  4. To start the update, click “Install.” You can also click “Later” and select “Install tonight” or “Remind me later.” If you selected the option “Install tonight”, just go to bed before connecting to the device with a power source. It will automatically update overnight.
  5. Enter the password if necessary. If you do not remember your password, see the instructions in this article.
How to Update Iphone 4 to Ios 9

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If an error occurs while updating wirelessly or there is not enough free space

Find out what to do if you receive an error message when you try to upgrade wirelessly. If you cannot update using the wireless connection due to lack of free space, you can update the software using a computer or manually delete the contents from the device. Regardless of how the update is installed — using a computer or wirelessly — after the process is complete, the amount of free space on the device will not change.

Some OS updates cannot be installed wirelessly. Connecting through a VPN or proxy server may interfere with the device’s connection to the update servers.

Automatic update

On a device with iOS 12 and later or iPadOS, you can set up automatic updates. To enable automatic updates, go to the Settings menu “Basic” Software Update, and then click Auto Update. Your device will automatically upgrade to the latest version of iOS or iPadOS. Some updates may need to be installed manually.

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Updating a device using a computer

If you cannot update the device wirelessly, you can perform the manual update on a trusted computer. If the computer uses the modem mode on the updated device, before starting the update, connect the computer to another Wi-Fi or Ethernet network.

  1. On a Mac with macOS Catalina 10.15, open the Finder application. On a Mac with macOS Mojave 10.14 or earlier, or on a Windows computer, open iTunes.
  2. Connect the device to the computer.
  3. Locate the device on the computer.
  4. Select “General” or “Settings,” and then click “Check for Updates.”
  5. Click the Download and Update button.
  6. Enter the password if necessary. If you do not remember your password, see the instructions in this article.

Computer error messages or lack of free space for updates

Find out what to do if error messages appear when updating the device using a computer. In addition, if the update fails due to lack of free space, you can manually delete content from the device.

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By updating iOS or iPadOS to the latest version, you will get access to the latest features, security updates, and also forget about old problems. Some features are not available on all devices or in all regions. Battery and system performance are affected by many factors, including network conditions and usage patterns, so actual performance may vary.