"I started the update on my iPhone 14 Pro and quickly received error 4013. Is anyone else experiencing this? I've tried a few steps and restarted, tried again, still receiving the error, which states a restore to factory settings. I've never had this with any other update before and have had an iPhone for years. Any suggestions?"
- from Apple Community
Accidentally encounter the unknown error 4013 when upgrading or restoring your iPhone or iPad via iTunes? Don't worry. Apple error 4013 is a common issue that you may face now and then on Apple devices, and you can fix the error code 4013 with numerous simple methods. Here, we will list eleven quick tricks to help you overcome iPhone error 4013 in a few minutes.
When you see an alert displayed on your computer that reads, "The iPhone could not be restored. An unknown error occurred (4013).", it indicates that something interrupts the communication between your computer and your iPhone or iPad, especially during an update or restoration process.
Many reasons may cause the iPhone restoration error 4013 or iTunes update error 4013, including:
After knowing the reasons, here are 11 solutions you can use to fix it.
When the iPhone error 4013 appears, the easiest way is to force restart your iPhone. However, the operation will vary with different iPhone models.
iPhone 8 or later:
iPhone 7 / 7 Plus: Hold the "Power" button and "Volume Down" button together.
iPhone 6s or earlier: Hold the "Home" button and "Power" button simultaneously.
Hardware or accessory damage can interfere with the wired transmission process, causing device detection errors, data transfer interruptions, and resulting in the "iTunes 4013" error message on the computer interface.
Therefore, you should first carefully check the USB data cable, the phone's charging port, and the computer interface to ensure they are intact and free from any obstructions like foreign objects or dust.
You can also try using a different cable or another computer to see if the iPhone 4013 issue is resolved.
An outdated version of iTunes may fail to recognize or verify newer iOS firmware, triggering iPhone error 4013. At this point, you can try updating iTunes to the latest version, which may resolve the iPhone Error 4013 issue.
On a Windows PC, open iTunes, then click on the "Help" menu in the top-left corner and select "Check for Updates". If a newer version is available, click "Install" to update.
On a Mac, open the App Store and go to the "Updates" section at the top. If a new update is available, click "Install" to update.
If updating iTunes cannot help, you can also update your computer's operating system to fix the iPhone error 4013.
How to update a Mac?
Step 1. Click the Apple menu at the top-left corner.
Step 2. Select "System Preferences" > "Software Update".
Step 3. Tap the "Update Now" or "Upgrade Now" if there is a new version available.
How to update a Windows PC?
Step 1. Click the "Start" button > "Settings" > "Update & Security".
Step 2. Select "Windows Update" > "Check for updates". You can also enable Windows to update automatically.
As we mentioned above, the computer firewall will prevent iTunes from accessing the Apple servers and cause the unknown error 4013. However, it's hard to figure out which firewall settings give rise to the problem. Therefore, you have to disable the firewall on your computer until iTunes successfully connects to the Apple servers and installs the iOS update firmware.
To turn off the firewall on a Mac:
Step 1. Tap the Apple menu in the upper left corner.
Step 2. Select "System Preferences" > "Security" > "Firewall" and tap "Stop".
Step 3. When a message pops up displaying "Firewall Off", that's it!
To turn off the firewall on a Windows PC:
Step 1. Open the Control Panel and pick "System and Security".
Step 2. Select "Windows Firewall" > choose the "Turn Windows Firewall on or off" option > click "Turn Off Windows Firewall".
Step 3. Tap "OK" to confirm the operation.
Usually, an update or restoration on your iPhone or iPad requires 4 to 6GB of storage. If you still encounter iPhone error 4013 after trying the above methods, ensure that your iPhone has enough storage available.
Go to "Settings" → "General" → "iPhone Storage" to check your iPhone storage. If it's not enough, you can delete unused apps, videos, or large files to free up iPhone space for updates or restoration.
A factory reset may repair some glitches or small bugs on your iPhone. But before proceeding further, you'd better back up your iPhone first, since it will erase all the iPhone data. You can back up your iPhone to a computer or an external hard drive to avoid data loss.
Then, you can factory reset your iPhone with these steps:
Step 1. Open the iPhone's "Settings" > find "General" > select "Reset" > tap "Erase All Content and Settings".
Step 2. If asked, enter the iPhone passcode to confirm the reset and tap the "Erase iPhone" button. Your iPhone will restart after erasure, and the Apple error 4013 may be fixed after that.
If the steps above didn't resolve the iPhone error 4013, try restoring your iPhone in recovery mode through iTunes. It's best to back up your iPhone beforehand; otherwise, all data on the device will be erased.
Here is how to do it:
Step 1. Use a USB cable to connect your iPhone to your computer and open iTunes or Finder.
Step 2. Put your iPhone into Recovery Mode:
Step 3. Once your iPhone enters Recovery Mode, you'll be prompted to "Restore" or "Update" it. Choose "Restore" and follow the on-screen instructions to complete the process.
Although Recovery Mode can resolve most system issues, if the methods above still don't work, you'll need to use a deeper data-erasing mode—DFU (Device Firmware Update) mode—to fix Apple error 4013. However, the process is more complex, and users without IT experience may find it challenging.
If you don't mind, here is a step-by-step guide:
Step 1. Use a cable to connect your iPhone to your computer, then open iTunes.
Step 2. Put your iPhone into DFU mode:
Step 3. At this point, your iPhone screen should remain completely black. If the screen lights up, repeat Step 2 until DFU mode is successfully entered.
Step 4. When iTunes shows the prompt, click "OK", then select "Restore iPhone" to begin the process.
If you want to fix iPhone error 4013 without data loss, the best solution is iOS System Recovery. This powerful software works with all iPhone/iPad/iPod running iOS 26 and earlier versions. And it fixes various iOS system issues to normal, including iPhone charge issue, iPhone loop restart, stuck in Apple logo, iTunes error 4005/4013, etc.
The highlights of iOS System Recovery:
* Fix various iOS system problems in one click: iPhone/iTunes error 4005/4013, iTunes cannot connect to this iPhone, iPhone activation issue, battery drain, blue/white/red/black screen of death, get stuck in DFU/Recovery mode, etc.
* Cause no data loss or change after repairing the issue.
* Offer Standard and Advanced modes to meet your diverse demands.
* Downgrade and upgrade iPhone operating system to a supported version.
* Support all iPhone and iPad models (iOS 26 compatible), including the latest iPhone 17 series.
How do I fix error 4013 on iPhone without data loss?
01Install and run the program on your computer. Then connect your iPhone to the computer using a USB cable and choose "More tools" > "iOS System Recovery".
02The program will start to detect the iPhone error automatically and display it on the interface. After that, tap the "Start" button to continue.
03Confirm the iPhone information on the interface. If incorrect, select the right information from the drop-down lists. Finally, tap the "Repair" button to fix the iPhone 4013 error automatically.
If nothing works, you can call Apple Support or visit the local Apple Store for help. If the warranty is still valid, don't forget to bring it with you.
In the above text, we offer you eleven practical ways to fix iPhone error 4013, and you can freely choose your favorite way to help you out. Generally, if you are looking for a higher success rate and a simpler method to repair iPhone error 4013, try iOS System Recovery first before taking it to the nearest Apple Store. It will resolve the problem in minutes without data loss.
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