However, many people said they run into the error 14 on iTunes while doing that.
Noticing this,MiniTooloffers this article to help them fix the error 14 in different ways.
Its a good choice to keep your devices always up-to-date for better security, stability, and experience.

Among them,error 14 iTunesis a popular one.
And the following content will discuss the causes of error 14 and the useful solutions to fix it.
However, some people said they come across the iPhone error 14 during the upgrade.
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The iPhone * could not be restored.
An unknown error occurred (14).
Note: * stands for the name of your iPhone.

If youre updating the iPad, youll see this error instead:
The iPad * could not be restored.
An unknown error occurred (14).
Also, * stands for the name of your iPad.

How To Fix If Your iTunes Is Not Detecting iPhone?
And the causes of error 14 iPhone and error 14 iPad are basically the same.
Now, kindly allow us to show you the most possible reasons that can result in error 14.

Solution 1: Check the USB Connections
kindly try iOS upgrade again after each step.
In addition, like go to check for any outdated or modified software.