How to fix an unknown error occurred (1667) − iPhone, iPad, iPod touch (Nothing else worked)
What is iTunes error 1667? How to fix it?
Error 1667 appears when you try to update your iPhone, iPad, or iPod touch to the latest version, or when you try to sync files from your computer to your iOS device.
The reasons behind this error include:
- Outdated iTunes version;
- Antivirus software;
- Faulty lightning cable;
- Corrupt iTunes file
- Malicious software (aka a virus);
- Outdated operating system.
The solutions listed below will assist you address this error. Read them carefully, and follow them to the detail.
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Put your device into DFU mode and then restore it via iTunes
0(0)0(0)Restore your device from DFU mode (Device Firmware Update), but only as a last resort, as it involves data loss. Apply this solution only after you have verified that there is nothing wrong with the USB lightning cable and both the computer's USB and iOS device's lightning (charging) port.
Follow the steps below, to put your device into DFU mode and restore it:
- Put your device into DFU mode - feel free to check this article on Apple, if you are not sure how;
- Connect your device with your computer, through the USB cable;
- Restore your device, following the on-screen instruction on your computer.
Note: If you use a laptop to restore your device, make sure it's fully charged first, as interrupting the restoring process is not advised and can be dangerous for your device. You may also plug in its power adapter.
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