What Is Error 4005?
If your iPhone, iPad or iPod is disconnected during an update or restore or if iTunes could not tell the iOS device to restore, you may see the following message:
- The (device name) could not be restored. An unknown error occurred (4005).
How To Fix Error 4005
1. Install the latest version of iTunes.
2. Restart your computer and Apple device.
3. See if your computer requires an update, if it does, restart your computer for a restore and afterwards check if the computer is now fully updated.
4. Attempt to restore your Apple device using another USB cable.
5. Try to restore your iOS device by using another computer.
If you still see the 4005 error after the restore, we suggest getting in touch with the manufacturer Apple.
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Frequently Asked Questions
Q: Will this error make me lose my data?
A: No, this error will not make you lose any saved information on your Apple device. We always recommend that you have your device backed up just in-case something was to go wrong.
Q: Why do I Keep Getting Errors?
A: You may be getting a lot of errors on your iPhone from a lot of things. The main reason is that you could be using the wrong firmware.