In such a case, make sure that it is not blocking the communication. This can be done by removing the 'gs.
Go to Microsoft support site to see how you can check the host file on Windows or if you're on Mac, follow the steps below:. Sometimes you receive the error 21 in iTunes because there is system glitch with your device. If it is the case, you'll need to repair iOS system to fix the error. Step 1: Step 3. Step 4: After system recovery, your iOS device will be updated to latest iOS version.
You can enjoy it without any stuck or error. Download the right version of the program and launch it after installation, and connect your iPhone to computer with USB cable. Step 2. Then the recovery tool will automatically detect your iPhone's possible problems and show them like iPhone Error 21, iTunes Error 27 , Screenshot Not Working, Stuck at Apple logo, Recovery mode and etc.
Please hit "Start" button to go on. Step 3.
Then please confirm your iPhone information. If it is right, please click "Repair" button to fix iPhone or iTunes error 21 right now; if not, select the right one and hit "Repair" option to start fixing process. And this program will download and instal the latest firmware on your device after detecting your current iOS version.
5 Ways To Fix IPhone Error 21
Wait for a while your iPhone error 21 issue will be fixed with the program. And you can start to connect your device to iTunes to restore or update your iPhone again.
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- Get help with iOS update and restore errors.
Get the latest version of iTunes and you might be able to fix iTunes Error A lot of times the proper functionality of some vital programs may be hampered by the anti-virus as they might be corrupted or be threats. In that case, turning off the Anti-Virus helps access those programs regardless and maybe update your device. You could try and fix iPhone Error 21 by removing all unnecessary external devices from the computer as they may have programs that are getting in the way of a proper restore and bring-ing up iPhone Error This method sounds either complicated or risky.
However, it's, not unless you do it exactly as it's supposed to be done. It's sorta' like defusing a bomb, cut the wrong wire and your device goes boom! Well, not literally, but you get the picture. However, if you do it right, you might be able to fix iPhone Error All you have to do is open the device, confiscate the screw which connects the battery. Disconnect the device cable and put it back together. This might help, though it seems like quite an extreme and risky measure, especially considering you have a far more guaranteed and viable option in dr.
While this does guarantee fixing iPhone Error 21, it does not guarantee that all your data will be safe. So only use this method if you've exhausted all other options. Here's how you can do it. This solution is likely to fix iPhone Error 21, however as I mentioned earlier it restores your phone to factory settings without giving you a chance to create a backup.
This would lead to considerable data loss, as opposed to the alternative of dr. The iTunes Error 21 might be caused because of an outdated or corrupt software. You might be using an old version of iTunes in which case you should refer back to Solution 3 and update it. You might be attempting to install an older version of iOS, in which case you should find the latest version and install that. In listing out the different methods by which you could fix iPhone Error 21, we haven't discriminated between the different methods. We believe you should have the ultimate power of decision so we've listed them all, along with their pros, cons, and risks.
restore error 21 - Apple Community
For example, some of the techniques are considered risky and can lead to severe data loss, some may even ruin your iPhone if not handled well, and most of them don't offer any guarantee of success. That is why my personal recommendation is to go with dr.
But, hey, the choice is in your hands! We just hope you make the right call, and then do common down below to let us know which method worked best for you! Dec 12, What is iTunes Error 21 iPhone Error 21? Solution 1: How to fix iTunes error 21 or iPhone error 21 without losing data One of the biggest concerns you probably have while attempting your restore and trying to fix iPhone Error 21 is whether your data is safe.
Available on: Windows Mac.
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- Common Causes of iTunes Error 21 or iPhone Error 21.
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Start Download. Start Download Start Download. Solution 2: