iTunes is a great option when you upgrade to the latest iOS. However, sometimes you run into errors such as iTunes error 14 during your upgrade or a restore. This is fortunately easily solved with few steps!
If during your upgrade process, you encounter a notification saying “This iPhone could not be restored. An unknown error occurred (14),” we have a couple of solutions for you.
According to Apple, this particular error is most commonly caused by issues with your USB cable. Additionally, our readers report that iTunes error 14 is often caused by a faulty firmware update file.
- 1 iTunes Error 14 Caused by Lightning USB Cable
- 2 Update to the Latest iTunes Version
- 3 iTunes Error 14 Caused by Unsuccessful Firmware File
- 4 iTunes Error Caused by Third Party Security Software
- 5 Summary
iTunes Error 14 Caused by Lightning USB Cable
To diagnose if an issue exists with your USB cable, try the following steps and check if the error occurs again.
- Use the original Apple Lightning USB cable that accompanied your iDevice
- Try a different USB port on your computer
- Use a different Lightning USB cable if available
- Test your Lightning USB cable on another computer
Update to the Latest iTunes Version
If you still get iTunes error 14, verify that you have the latest update of iTunes.
- Open iTunes and it will prompt if you need the new version.
- Simply follow the steps and update to the latest iTunes software
Try connecting your device again and see if that worked for you.
iTunes Error 14 Caused by Unsuccessful Firmware File
In some cases the upgrade file for your device was not successfully downloaded. If so, this may be cause the error 14. When a restore issue is specific to a user, it’s likely due to an unusable .ipsw file. iTunes uses these IPSW files to restore your device.
If you are getting iTunes error 14, those IPSW files may be unusable. So try deleting them, renaming them, or moving the file to a different directory. Removing the IPSW file causes iTunes to download a new copy of the IPSW.
Your .ipsw Files are Located in These Places
IPSW files on Mac OS
- iPhone~/Library/iTunes/iPhone Software Updates
- iPad~/Library/iTunes/iPad Software Updates
- iPod touch~/Library/iTunes/iPod Software Updates
Note: The tilde “~” represents your Home directory.
IPSW files on Windows XP
- iPhoneC:\Documents and Settings\[username]\Application Data\Apple Computer\iTunes\iPhone Software Updates
- iPadC:\Documents and Settings\[username]\Application Data\Apple Computer\iTunes\iPad Software Updates
- iPod touchC:\Documents and Settings\[username]\Application Data\Apple Computer\iTunes\iPod Software Updates
Note: To quickly access the Application Data folder, choose Start > Run. Type %appdata% and click OK.
IPSW files on Windows Vista, 7, and 8
- iPhoneC:\Users\[username]\AppData\Roaming\Apple Computer\iTunes\iPhone Software Updates
- iPadC:\Users\[username]\AppData\Roaming\Apple Computer\iTunes\iPad Software Updates
- iPod touchC:\Users\[username]\AppData\Roaming\Apple Computer\iTunes\iPod Software Updates
Note: To quickly access the AppData folder, click Start, type %appdata% in the search bar, and press the Return key. Windows 8: Move the cursor to the upper right, click the magnifying glass, type %appdata%, and press the Return key.
Follow these steps once you delete or move the .ipsw file:
- Close iTunes on your computer
- Now open iTunes again on your computer
- Delete the .ipsw (iOS upgrade file) file by going to System Drive> User> Your Username> App Data> Apple Com> i-Tunes> iPhone Software Updates
- If connecting your iPad or iPad follow the same path but after entering iTunes folder go to iPad Software Updates or iPod Software Updates
- Restore and Upgrade your iDevice by following iTunes prompts
You should no longer get iTunes error 14. Your iPhone or iPad should successfully restore and upgrade to the latest iOS.
If removing the .ipsw file didn’t resolve your restore issue, then the issue is probably caused by other user-specific setting. This includes any third party security software settings and your iTunes preferences.
iTunes Error Caused by Third Party Security Software
If none of the solutions above solve the error, check to see if any third party security software might cause the problem. Third party security software often prevents Apple iDevices to restore, upgrade, or back up by not allowing connections to Apple servers.
So try and temporarily deactivate any third party security software and check if iTunes error 14 error stops allowing your iDevice to upgrade or restore.
Using iTunes to upgrade to the latest iOS is good practice. However, if difficulties persist, try and upgrade via WiFi. Ensure you have an excellent WiFi connection and check that your iDevice’s battery has at least 50% power. If less than 50% charged, connect your iPhone, iPad, or other iDevice to a power source and start the upgrade. With a fast and reliable WiFi connection, your upgrade is seamless and fast.