Unable to install iOS 12 update on your iPhone? You’re not alone. Some iPhone users are getting an error that reads “Unable to install update. An error occurred install iOS 12.” 

The error occurs after you have downloaded iOS 12 update on your iPhone, but the installation fails to complete. You can retry the installation if you want but the chances are you’ll get the same error every time you try to install the OTA update.

To fix this problem, you need to use iTunes to update your iPhone to iOS 12.

  • Download and install iTunes 12.9 on your computer.
  • Connect your iPhone to the computer with a USB cable.
  • Open iTunes on the computer, and hit the Check for Update button.

iTunes will detect the iOS 12 update for your iPhone and prompt you to install it. If you need a detailed guide for updating to iOS 12, check out the link below:

How to Update to iOS 12

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