Error 1600: USB Connection Issue
This error indicates a problem with the USB connection between your device and computer during the restore process.
- • On Mac with macOS Catalina 10.15 or later: Ensure your Mac is up to date
- • On Mac with macOS Mojave 10.14 or earlier: Ensure you have the latest version of iTunes
- • On PC: Ensure you have the latest version of iTunes or the Apple Devices app
- 1 Do not use third-party or damaged USB cables
- 2 Avoid USB hubs — connect directly to your computer
- 1 Faulty or non-certified USB cable
- 2 USB port issues on computer
- 3 Loose connection
- 4 Interference from other USB devices
Understanding Error 1600
Error 1600 indicates a USB communication problem between your device and computer during the restore process. This error belongs to the 1600-series of USB connection errors, which also includes 1601, 1602, 1603, and 1604. All share the same root cause: an unreliable USB connection.
Step-by-Step Troubleshooting
1. Use an Original Apple USB Cable
Third-party cables may not support the data transfer speeds required for a firmware restore. Use the cable that came with your device or an Apple-certified (MFi) replacement.
2. Connect Directly to Your Computer
- Avoid USB hubs — they can cause intermittent disconnections
- Don’t use keyboard USB ports — they often provide insufficient power
- Plug directly into a port on your desktop or laptop
3. Try a Different USB Port
Switch to another USB port on your computer. If you’re using a USB-C port, try a different one. If you’re using USB-A, try a USB-C port with an adapter.
4. Try a Different Computer
If the error persists, try the restore on a different computer. This helps determine if the issue is with your computer’s USB controller.
5. Clean the Charging Port
Lint and debris in your device’s charging port can cause poor contact:
- Use a wooden toothpick or anti-static brush
- Gently remove any visible debris
- Do not use metal objects or compressed air
6. Try Recovery Mode
If the USB connection is stable but the error still occurs, try entering recovery mode before restoring.
Related Errors
If Error 1600 doesn’t match your situation, check these related errors:
- Error 1601 — Same USB issue, different phase
- Error 1602 — USB connection during custom restore
- Error 13 — General USB connection issue
Related Articles
Related Errors
Other USB Connection Issues
If you've tried all the steps above and still can't resolve the issue, you may need to contact Apple Support or visit an Apple Store. You can also compare your case against Apple's official iOS update and restore errors page.