5 Ways To Fix iTunes Error 21 iPhone 5 5S 5C 4S 6 6 Plus 6S & 6S Plus

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Best 5 tested professional methods to fix iTunes error 21 on iPhone 5S 5C 5 4S 6 6S & 7 and complete the restore / update process https://www.unlockboot.com/fix-itunes-error-21-when-restore-iphone-ipad/

Here are the methods to fix iTunes Error 21 on your iPhone

1. Restart iTunes Tool
2. Update iTunes App
3. Disable Your Antivirus Software
4. Check Your Host File
5. Unplug All other USB Devices

If still not fixed error 21 problem, follow the link in the description for more tips to resolve this error.

More iTunes error fixes can be found on https://www.unlockboot.com/


José María Camacho Aires says:

After trying everything, the error 21 persisted, in Mac 2001, in my iphone 5. I replaced the battery and come alive again. A failure in the battery electronic component, and forget it. Before, my iphone was locked in loop, it had already shown problems with the percentaje meter, and Unexpected restarts while loading, somebody says sometimes happens to use The vehicle's cigarette lighter, and others than simply a defective battery. Remember after the change, the phone must exit the recovery mode to turn on.

Alain Sanchez says:

podrías hacer el video en español por favor

Boota Yoo says:

I turned off anti virus , internet security , window defender , changed USB port and restarted ITunes , then i tried to resort and it worked perfectly fine ! thank you very much for tips !

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