iOS Restore Error: How to Fix with Codes 4013, 4005, and Others

What is an iOS Recovery Error?

An iOS recovery error occurs when you attempt to update or restore an iPhone/iPad to factory settings via iTunes (Windows) or Finder (macOS). Instead of completing successfully, the process is interrupted with a message such as: "Failed to restore iPhone. An unknown error (4013) occurred" or similar text.

This is a critical issue, as the device may end up "stuck" on the recovery screen or become completely unusable. The good news is that in most cases, the error is caused by software or connectivity factors and can be resolved independently.

Common Error Codes and Their Meanings

• 4013, 4005, 4000 — connection issues, cable, port, or firmware download problems.
• 9, 10 — firmware corruption or issues with Apple servers.
• -1 — a general error, often related to iTunes or antivirus software.
• 3194 — an outdated or incompatible iOS version in the backup.

Why Does an iOS Recovery Error Occur?

1. Cable or port issues — non-Apple cable, damaged port, USB hub.
2. Outdated software — old version of iTunes, macOS, or Windows.
3. Firmware download failures — internet interruption, problems with Apple servers.
4. Hardware malfunctions — damage to NAND memory, battery, or controller.
5. Software conflicts on the computer — antivirus, firewall, other programs.
6. Device system corruption — crash after jailbreak, failed update.

Step 1: Preliminary Checks and Preparation

Before taking more complex actions, complete these basic steps:

1. Use an original Apple cable (or MFi-certified). Cheap alternatives often cause connection drops.
2. Connect the cable directly to the computer, without USB hubs or extenders.
3. Choose the correct port — on a PC, use ports on the rear panel (they are usually more powerful). On a Mac, any USB-C/USB-A port.
4. Restart both the computer and the device — this resets temporary glitches.
5. Disable antivirus and firewall temporarily during recovery. They may block the connection to Apple servers.
6. Check your internet connection — it must be stable. If using Wi-Fi, switch to a wired connection.

⚠️ Important: Ensure the device has sufficient battery charge (at least 50%). The device must not power off during the recovery process.

Step 2: Update Your Software

Outdated software is a frequent cause of errors.

For Windows:

1. Open iTunes → "Help" → "Check for Updates."
2. Install the latest version from the official Apple website.
3. Update Windows via "Settings" → "Update & Security."

For macOS:

1. Open the App Store → "Updates" and install everything.
2. Ensure macOS is up to date ("System Settings" → "Software Update").
3. Finder uses built-in update mechanisms, so updating macOS is critical.

Step 3: Standard Recovery via iTunes/Finder

If the error persists, try a standard recovery:

1. Launch iTunes (Windows) or Finder (macOS).
2. Connect the device via cable.
3. For iTunes: select the device in the top-left corner → "Summary" → "Restore iPhone." For Finder: select the device in the sidebar → "General" → "Restore iPhone."
4. Confirm the action. iTunes/Finder will download and install the latest version of iOS.

💡 Tip: If downloading the firmware takes too long, you can download it manually via ipsw.me, then in iTunes hold Shift (Windows) or Option (macOS) while clicking "Restore" and select the downloaded file.

Step 4: Recovery in DFU Mode

DFU (Device Firmware Update) is a boot mode that bypasses the device's current system. It resolves most firmware-related errors.

How to Enter DFU Mode:

For iPhone 8, X, 11, 12, 13, 14, 15 and newer:

1. Quickly press and release the volume up button.
2. Quickly press and release the volume down button.
3. Hold the side button until the screen turns black (about 10 seconds).
4. Without releasing the side button, press and hold the volume down button for 5 seconds.
5. Release the side button, but continue holding the volume down button for another 5 seconds. The screen should remain black — you are in DFU.

For iPhone 7 and 7 Plus:

1. Hold both the side button and the volume down button simultaneously for 10 seconds.
2. Release the side button, but continue holding the volume down button for another 5 seconds. The screen stays black.

For iPhone 6s, SE (1st generation) and older:

1. Hold both the side button and the Home button simultaneously for 10 seconds.
2. Release the side button, but continue holding the Home button for another 5 seconds. The screen stays black.

After Entering DFU:

1. iTunes/Finder will detect the device in recovery mode and prompt to restore.
2. Click "Restore." The process will take 10-20 minutes.
3. The device will reboot with a clean system.

⚠️ Important: DFU mode recovery completely erases all data on the device. A backup made via iCloud or iTunes will only be available if it was created before the error occurred.

Step 5: Other Potential Solutions

Check Apple Servers

Sometimes errors are caused by issues on Apple's end. Visit the Apple System Status page. If "iOS Software Update" or "iTunes Store" are marked yellow/red, wait a few hours.

Alternate Computer

Try restoring the device on a different computer (preferably a Mac if you use Windows, and vice versa). This will rule out driver or configuration issues specific to one system.

Manual Firmware Download

If iTunes/Finder cannot download the firmware (errors 4000, 4013), download it manually:

1. Go to ipsw.me and select your device model.
2. Download the latest version of iOS (or the version you wish to install).
3. In iTunes/Finder, hold Shift (Windows) or Option (macOS) while clicking "Restore" and select the downloaded .ipsw file.

Reset Network Settings

On the device (if it is partially functional), go to: "Settings" → "General" → "Transfer or Reset iPhone" → "Reset" → "Reset Network Settings." Then try the recovery again.

Clear iTunes Temporary Files

On Windows, delete the folders:

• C:\Users\[Your username]\AppData\Local\Apple Computer\iTunes\
• C:\ProgramData\Apple Computer\iTunes\

On macOS, delete:

• ~/Library/iTunes/
• /Library/Application Support/Apple/

Then restart iTunes and try again.

Step 6: When to Contact Support

If none of the methods work, hardware malfunctions may be the cause:

• NAND memory damage (often after jailbreaking).
• Power controller failure.
• Battery issues.

What to do:

1. Apple Support — via their website, app, or phone. They may offer mail-in repair.
2. Authorized Service Provider — guaranteed use of genuine parts.
3. Unofficial repair shops — risky but cheaper. Ask if they have equipment to reprogram chips (e.g., for NAND replacement).

💡 Tip: Before contacting service, try the recovery on a different computer and with a different cable. This will eliminate your own equipment from the list of suspects.

Preventing Recovery Errors

1. Use only original/certified accessories.
2. Back up regularly via iCloud or iTunes.
3. Do not interrupt the update/recovery process — do not unplug the cable or turn off the computer.
4. Update iOS in a timely manner, but not immediately after a new version is released — wait 1-2 weeks for critical bugs to be fixed.
5. Avoid jailbreaking on primary devices — it often leads to system instability.

Final Recommendations

iOS recovery errors are solvable in about 80% of cases. Start with the simple things: check the cable, update software, try DFU mode. If nothing works, it's time for professional diagnostics. Do not attempt to "fix" the device using third-party utilities (e.g., 3uTools, iMazing) without understanding the risks — they can worsen the problem.

Important: This guide is applicable for iOS 12 and later on iPhone 6s/iPad 5th generation and newer. Steps may differ for older devices. If you have a specific error code (e.g., 4013), search for it on FixPedia — there may be a separate article with targeted solutions.