If you own an iPhone then chances are you might have seen the error code 4005 when you updated or restored your phone. This issue is usually caused by the phone not able to communicate with the iTunes software and when this happens you will usually see this on the phone screen “The iPhone [device name] could not be restored. An unknown error occurred (4005)”.
Listed below are the recommended troubleshooting steps that you need to perform for this particular problem.
How To Fix iPhone Error 4005
- Make sure you have the latest version of iTunes installed in your computer.
- Force restart your device. Please refer to online guides on how to force restart your particular model.
- Connect your device to your computer using a USB cable.
- When iTunes asks you to update or restore, click Update (not Restore) to reinstall iOS and keep your personal data.
If the issue persists then proceed with the additional troubleshooting steps listed below.
- Check for updates to your Mac or PC. If you restart your computer for an update, check for updates again after you restart.
- Try to restore your device using another USB cable.
- Try to restore your device on another computer.
In case the above steps does not fix the problem then you should contact the Apple support group regarding this matter.
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If you have any concerns regarding your iPhone feel free to contact us using this form. We will provide you with free technical support regarding the issue you are facing with your device. Just make sure to provide as much detail as possible so that we can make an accurate diagnosis.