Quick Summary
Error 4013 on an iPhone typically indicates a hardware or connectivity issue that interrupts the restore or update process. It often means the device disconnected unexpectedly during the procedure, or the computer is unable to communicate properly with the iPhone.
Common Causes
- Faulty USB Connection: A loose, damaged, or incompatible USB cable or port can disrupt the data transfer during the restore process.
- Outdated iTunes/Finder: Using an old version of iTunes (on older macOS) or Finder (on newer macOS) may cause compatibility issues with the operating system of the iPhone.
- Security Software Interference: Antivirus software or firewalls might block iTunes/Finder from communicating with Apple servers or the iPhone.
- Hardware Problem: There may be an underlying hardware fault with the iPhone itself, in the port or logic board.
- Insufficient Storage: Although less likely, very low storage space on the computer attempting the restore *may* cause issues during file handling.
Step-by-Step Fixes
Method 1: Basic Troubleshooting Steps
Step 1: Try a different USB cable. Ensure the cable is an original Apple cable or a certified MFi (Made for iPhone/iPad/iPod) cable. Damaged or non-compliant cables can cause connection issues.
Step 2: Try a different USB port on your computer. Avoid using USB hubs. Connect the iPhone directly to a USB port on the motherboard.
Step 3: Restart your computer and iPhone. A simple restart can often resolve temporary software glitches.
Step 4: Force restart your iPhone: Quickly press and release the volume up button, quickly press and release the volume down button, then press and hold the side button until you see the Apple logo.
Method 2: Update iTunes/Finder
Step 1: Open iTunes (if using macOS Mojave or earlier/Windows). Go to Help > Check for Updates. Install any available updates.
Step 2: If using macOS Catalina or later, system updates are managed through System Preferences. Go to System Preferences > Software Update. Install any available updates.
Method 3: Disable Security Software
Step 1: Temporarily disable your antivirus software and firewall. Note their names and settings before disabling so that you can correctly revert the changes after testing.
Step 2: Retry the restore process with security software disabled. If the restore completes, re-enable your security software.
Step 3: If any issues remain, configure your security software to allow iTunes/Finder to access the internet and communicate with Apple devices.
Method 4: Put iPhone into DFU Mode
Step 1: Connect your iPhone to your computer.
Step 2: Put your iPhone into DFU (Device Firmware Update) mode. The steps vary depending on your iPhone model. Search online for instructions specific to your device model (e.g., 'iPhone X DFU mode,' 'iPhone 8 DFU mode').
Step 3: Once in DFU mode, iTunes/Finder should detect your iPhone and prompt you to restore it.
Warning: Back up your data if possible. DFU mode wipes everything.
Method 5: Check Host File
Step 1: Locate your computer's host file. The location varies by operating system:
- Windows:
C:/Windows/System32/drivers/etc/hosts - macOS: Open Terminal and type
sudo nano /etc/hosts
Step 2: Check for entries related to Apple servers (e.g., gs.apple.com). If you find any entries, comment them out by adding a '#' at the beginning of the line. Save the file.
Step 3: Retry the restore process.