iPhone Restore Error 4013 4014: Fixes That Work

If you see error 4013 or 4014 during an iPhone restore or update, it means your computer lost communication with the device — the fix usually involves changing cables, ports, or using recovery mode. These errors are most common on Windows PCs and older Macs, but they can happen on any setup. Below are the exact steps to resolve them, plus why they occur and how to avoid them in the future.

What Do Error 4013 and 4014 Actually Mean?

Error 4013 and 4014 are iTunes/Finder errors that appear when the restore or update process is interrupted. Apple’s official documentation groups them under “unknown errors� — they do not point to a specific hardware fault. In practice, 4014 typically appears when the iPhone disconnects from the computer mid-restore, while 4013 often indicates a deeper communication failure, sometimes related to USB hardware or the device’s baseband (cellular modem) firmware. Both can also be triggered by a corrupted IPSW file, outdated software, or a failing USB port.

Why Does This Happen? Common Root Causes

Before jumping into fixes, it helps to understand what’s going on behind the scenes. During a restore, your iPhone erases its current system and writes a fresh copy of iOS. This process requires a stable, uninterrupted data connection between the phone and the computer. Any break — even a millisecond — can abort the procedure and trigger error 4013 or 4014. The most frequent culprits are:

Bad or non-certified USB cables — cheap third-party cables often lack proper shielding, causing data transfer to fail under load.
Faulty USB ports — front-panel ports on desktop PCs are especially prone to power and data issues.
Outdated iTunes or Finder — older versions may not support the iOS version you’re trying to install.
Corrupted download — if the iOS firmware file (IPSW) is incomplete, the restore will fail.
Security software — antivirus or firewall tools can block the connection mid-restore.
Hardware issues — a damaged Lightning/USB-C port or a failing logic board can also cause these errors, though this is less common.

Step-by-Step Fixes to Try First

Work through these in order — most users resolve the issue with the first or second step.

Restart both devices. Unplug the iPhone, restart your computer, then restart the iPhone (press and hold the side button and either volume button until the power slider appears). Reconnect and try again.
Try a different cable and port. Use an Apple-certified cable (look for the MFi badge). Plug it directly into a USB port on the back of a desktop PC, not a hub or front panel. If you’re on a Mac, try a different USB-C/Thunderbolt port.
Update iTunes or Finder. On Windows, open the Microsoft Store and check for updates. On macOS, go to System Settings > General > Software Update. Then restart your computer.
Disable security software temporarily. If you have antivirus or a firewall, turn it off for the duration of the restore. Re-enable it afterwards.
Put the iPhone in recovery mode and retry. Connect the iPhone to the computer, then force-restart it while holding the appropriate button (see below). When the recovery mode screen appears, iTunes/Finder will offer to Update or Restore — choose Restore, and if that fails, try Update first.

How to Enter Recovery Mode (by iPhone Model)

Recovery mode is a fallback that lets you restore a device that’s stuck or failing. The button combination varies by model:

iPhone 8 or later (including SE 2nd/3rd gen): Press and quickly release Volume Up, then Volume Down, then press and hold the Side button until the recovery mode screen appears.
iPhone 7/7 Plus: Press and hold the Side (top) button and the Volume Down button simultaneously until the recovery screen shows.
iPhone 6s and earlier, iPhone SE 1st gen: Press and hold the Home button and the Top (or Side) button together until the recovery screen appears.

Once in recovery mode, connect to your computer and follow the prompts. If the restore still fails with 4013/4014, move to the next section.

Advanced Troubleshooting: When Basic Fixes Fail

If you’ve tried the basics and still see the error, the problem may be deeper. Here are more advanced steps:

Check for a corrupted IPSW file. If you’re manually downloading the firmware, delete the IPSW file from your computer and let iTunes/Finder re-download it. A partially downloaded file is a common cause of 4013.
Try a different computer. If you have access to another PC or Mac, attempt the restore there. This isolates whether the issue is with your primary computer’s USB controller or software.
Update USB drivers (Windows only). Go to Device Manager, expand “Universal Serial Bus controllers,� right-click each entry, and select “Update driver.� Reboot and retry.
Use a different USB port type. If you’re using a USB-C to Lightning cable, try a USB-A to Lightning cable (or vice versa) with an adapter if needed.
Check for hardware damage. Inspect the iPhone’s charging port for lint or debris, and try a different cable. If the port is damaged, a repair may be necessary.

What to Do If Nothing Works: DFU Mode and Hardware Concerns

If error 4013/4014 persists after all software troubleshooting, the next step is DFU (Device Firmware Update) mode. DFU mode is a deeper restore that bypasses the bootloader and can fix firmware-level issues. To enter DFU mode:

Connect the iPhone to your computer.
For iPhone 8 or later: press Volume Up, then Volume Down, then hold the Side button for 10 seconds. While holding the Side button, also press and hold Volume Down for 5 seconds, then release the Side button but keep holding Volume Down for another 10 seconds. If the screen stays black, you’re in DFU mode.
For iPhone 7: hold Side + Volume Down for 10 seconds, then release Side but keep Volume Down for 10 more seconds.
For iPhone 6s and earlier: hold Home + Side for 10 seconds, then release Side but keep Home for 10 more seconds.

When in DFU mode, iTunes/Finder will show a “Recovery Mode� prompt — restore from there. If DFU restore also fails with 4013/4014, the issue is likely hardware-related (e.g., a damaged NAND chip or logic board). In that case, you’ll need to contact Apple Support or an authorized repair center.

Frequently Asked Questions

Will I lose my data if I restore with error 4013/4014?

Yes, a restore erases all data on the iPhone. If you have a recent iCloud or iTunes backup, you can restore your data after the process completes. If you don’t have a backup, the data is likely unrecoverable, though a professional data recovery service might help in some cases.

Can error 4013/4014 be caused by a faulty battery?

Not directly. The error is a communication failure, not a power issue. However, if the battery is severely degraded, it could cause the device to shut down mid-restore, which might trigger a similar error. But 4013/4014 specifically point to data transfer problems.

Does error 4013 mean my iPhone is bricked?

No. In most cases, the iPhone is not permanently damaged. Recovery mode and DFU mode are designed to restore a device that’s stuck. Only if all restore attempts fail is there a chance of permanent hardware failure.

Can I fix error 4014 without a computer?

No, both errors require a computer to restore the iPhone. If you don’t have access to a computer, you can try using a different computer (e.g., a friend’s) or visit an Apple Store, where they can run the restore on their equipment.

Why does the error happen more on Windows than Mac?

Windows PCs are more prone to USB driver issues, power management settings, and third-party security software that can interfere with the restore process. Macs have tighter integration with iOS, but they can still experience the error, especially with older versions of macOS.

Is there a way to prevent error 4013/4014 in the future?

Yes. Always use an Apple-certified cable, plug directly into a USB port on the computer (avoid hubs), keep iTunes/Finder updated, and disable security software during updates. Also, ensure your iPhone has at least 50% battery before restoring.

General steps for current mainstream versions; menus can differ by device and version. See the disclaimer or report an error.

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