How to Fix Error 39 on an iPhone?


iPhones have become an important part of our lives in the current world we live in now. People use them to get things done, stay in touch, and have fun. But iPhones have issues, just like other hard-to-use tools. “Error 39” is a common problem for iPhone users. Most of the time, you do this when you sync your device with iTunes or when you restart it.

It shows the message, “The [name of device] iPhone could not be restored. We don’t know what happened (39).” This mistake could have been caused by broken files, bugs in your software, or even problems with your computer’s hardware.

How to Fix Error 39 on an iPhone?

Before we talk about what iPhone Error 39 is and how to fix it, it’s important to know what it is. This generally happens when you try to sync your iPhone with iTunes, turn it off and back on, or update the iOS. It can look like different things, such as “iPhone could not be restored. We don’t know what happened (39).” You might not know what to do with this strange trouble code, but we can help.

Method 1: Update iTunes to the Latest Version

A simple and still-working way to fix Error 39 is to make sure your iTunes app is up-to-date. If you don’t have the most recent version of iTunes, it might not work well with your device, which can cause problems. This is what you should do:

  • Open iTunes on your computer. Open iTunes on your machine to make sure you’re using the most up-to-date version.
  • Select “Check for Updates” from the list of options. Go to the “Help” menu if you’re using Windows, and the “iTunes” menu if you’re using macOS. Pick “Check for Updates” from that menu.

iPhone error 39

  • To update, just follow the steps on the screen. The app will automatically look for changes. To get the latest version of iTunes, just follow the steps on the screen.

Method 2: Check Your Computer for Issues

Even though the error message shows up on your iPhone, the problem might be with your computer. It could be your computer’s USB ports or drivers. To solve these problems:

  • Make sure that your computer has all the latest changes. Make sure your computer’s running system is up to date before you do anything else. Most of the time, this helps people get along better.
  • Switch out the USB plug. If you keep getting Error 39, try different USB ports on your computer. Sometimes, some ports may not work.
  • Use a different computer to do the job. Make the mistake on a different machine, if you can, to see if it still happens. This will help you figure out whether the problem is with your computer or your iPhone.

Method 3: Verify the Integrity of the USB Cable

Error 39 can also happen if the USB connection is broken or a fake. To find out if the link is not the problem:

  • Use an Apple-recommended USB connection. Use only a USB cord that Apple has allowed to make sure it works and doesn’t break.
  • Try a different USB port if you can. Try a different Apple-approved line and see if the trouble goes away.
  • Make sure the links are safe by checking them out. Make sure that the USB cord is still securely connected to both your iPhone and your computer.

Method 4: Temporarily Disable Security Software

Error 39 can happen when firewalls or other security tools stop iTunes from working. To handle this:

  • Find the tool for your safety. Find out what kind of software you have on your machine to protect it.
  • Turn the show off or stop it for now. So that iTunes can work, stop, or pause the security software for a while.
  • You may need to try again to get your iTunes app to start up. Turn off the security software and try to fix iTunes again to see if Error 39 still shows up.

Method 5: Clear iTunes Cache

Over time, iTunes keeps things in its cache, which can sometimes lead to problems like Error 39. This problem might go away if you delete the cookies:

  • Don’t use iTunes. Make sure that iTunes is completely turned off on your machine.
  • Find out where iTunes stores its data. Find the folder where iTunes keeps its files on your computer and open it. Things that will only be there for a short time go in this box.

iPhone error 39

  • Throw away all of the files and folders in the memory area. Empty the cache folder of everything. These are temporary files that won’t have any effect on your iTunes account.
  • Try restoring again by starting iTunes over. Once the cache is gone, start iTunes again and try to fix it again.

Method 6: Restore in DFU Mode

If none of the other ways to fix Error 39 work, you could try setting your iPhone back to factory settings in DFU mode. This is the last option because it will delete everything on your computer. Please pay attention:

  • You can connect your iPhone to your computer. First, connect your iPhone to your computer with a USB cable.
  • Launch iTunes. If your computer doesn’t automatically open iTunes, you can open it.

iPhone error 39

  • Put your iPhone into DFU mode. To put your iPhone into DFU mode, follow the steps for your iPhone model. Depending on the type of iPhone, these steps may be different.
  • iTunes will know when your iPhone is in repair mode. Once your iPhone is in DFU mode, iTunes will know that it is in recovery mode. You’ll get a message telling you to turn your thing back on.


Error 39 on your iPhone can be very annoying, but if you follow the tips in this piece, you should be able to fix it. Follow the steps here to fix the problem. First, make sure your software is up-to-date and that your USB connections are set up properly. But if nothing else works and the problem keeps happening, it could be a sign of a more serious tech problem that needs to be fixed by calling Apple Support. To read more content like this, visit

Frequently Asked Questions (FAQs)

Why Does Error 39 happen a lot on iPhones?

Error 39 is a common problem that can happen when sharing or recovering.

Is it possible to fix Error 39 without a computer?

Most answers need a computer, but you can try to fix the problem with your iPhone.

If I recover in DFU mode, will I lose everything?

Yes, when you restore in DFU mode, everything on your iPhone will be erased. Make sure you have a copy of it before you do it.

What do you do if you’ve tried everything and the problem still won’t go away?

If the problem keeps happening, it could mean that the gear has a more serious problem. In that case, you should contact Apple Support.

Can I stop Error 39 from happening again?

Error 39 is less likely to happen if you keep your software up to date and only use Apple cords and devices.

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