How to fix an unknown error occurred (4005) in iTunes (Nothing else worked)
What is iTunes error 4005? What is it caused by? How to fix it?
Device could not be restored − an unknown error occurred (4005), is an error that occurs when you try to update and restore your iPhone, iPad or iPod touch through your computer, using iTunes.
The reasons why this error can occur include:
- Outdated iTunes software installed on your computer;
- Antivirus software settings;
- Viruses;
- Corrupt iTunes files.
Compiled after spending hours on hours in research, below you can find detailed and step-by-step solutions to fixing this iTunes error. Make sure to read them carefully, and follow the instructions to the letter.
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Replace the USB (lightning) cable
0(0)0(0)Consider replacing the USB (lightning) cable, if you tried all the solutions, but none of them worked, i.e. you still get this "an unknown error occurred" error in iTunes, and after you have ensured that both your iOS device's and computer's USB ports function properly.
Make sure to buy a genuine cable from an authorized Apple reseller, to avoid additional complications that can arise.
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