error 21 for iphone
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Jailbreak Developers iPhone Dev Team Saurik MuscleNerd Planetbeing Comex Pod2G P0sixNinja i0n1c iH8Sn0w GeoHot NotCom Jailbreak Guides iPhone Jailbreak Tutorials Jailbreak iPod Touch Jailbreaking Explained Cydia Jailbreak Software http://jaxov.com/2011/03/how-to-fix-itunes-error-21-during-custom-ipsw-restore/ Sn0wbreeze Absinthe Blackra1n LimeRa1n JailbreakM Redsn0w Greenpois0n PwnageTool Seas0nPass iPhone Unlock Unlock iPhone Unlock iPhone 3Gs Unlock iPhone 4 Unlock iPhone 4s Ultrasn0w News IOS Wiki Fix iTunes Error 21 http://www.iblogapple.com/2016/04/20/fix-error-code-21-itunes-restoring-iphone-ipad-ipod/ During Custom IPSW Restore [How-To Guide]By Ben Johnson last updated June 27, 2014 Share on Twitter Share on Google+ Share on Facebook Share on LinkedIn Jailbreaking your iPhone, iPod Touch or iPod error 21 using custom IPSW made by PwnageTool or Sn0wbreeze requires a full firmware restore using iTunes. During the restore process, if you encounter Error 21, it means that you are trying to restore custom IPSW using the recovery mode. To fix this issue, you must put your iDevice into DFU mode.DFU or Device Firmware Upgrade mode allows all iDevices to be restored from any state. The iphone error 21 actual difference between recovery and DFU mode is that when you put your iDevice into DFU mode, it do not loads iBoot automatically. When you put your iPhone in recovery mode, it loads iBoot which makes sure that the firmware you are trying to restore is greater or equal to the current firmware.To fix iTunes error 21, you must put your iDevice into DFU mode using the following instructions:Connect your iDevice to your PC or Mac via USB cable and launch iTunes.Hold down the Home+Power button for 10 seconds.After 10 seconds, release the Power button but keep holding the Home button until iTunes detect your iPhone in recovery mode.Once your iDevice is in DFU mode, you should see nothing on its screen. It should be completely blank.Even if your iDevice is in DFU mode, iTunes will detect it as a recovery mode device and will display a message as shown in the above screenshot. As soon as you see the above message, restore custom IPSW and hopefully this time you will not get iTunes Error 21.Be Sure to Check Out:Fix iTunes Error 3194 While Restoring iOS 5.1.1 on iPhone, iPod &
iPad or iPod Touch using iTunes, you might sometimes face several errors that will immediately put you in a panic mode. One such example is error code 21 which usually happens when you're in the middle of a restore process in iTunes.If you've encountered error 21 in iTunes and are looking for a way to fix it then you've come to the right place. In this article, we will show several methods that can be used to get rid of error 21 in iTunes and successfully restore or update your device.Method 1: Update iTunesSometimes the problem arises when iTunes hasn't been updated to the latest version. It's important that whenever you want to update or restore your iOS device, you have the latest version of iTunes installed. Step 1: Launch iTunesStep 2: On Mac, select iTunes from the menu bar and click on Check for Updates. In Windows, open Help from the menu bar and choose Check for Updates.Step 3: If there's an update available then proceed with installing and updating your iTunes to the latest version.Method 2: Reinstall iTunesIf the previous method didn't work for you, consider removing iTunes from your computer and reinstalling it again. You can download and install the latest version of iTunes from Apple's website.Method 3: Disable/Remove Security SoftwareIn some cases, your security software such as antivirus could be causing the issue with your computer's connection with iTunes. To fix the issue, consider disabling any security and antivirus softwares temporarily or remove them. Some security softwares might not be uninstalled completely so you will need to use a cleanup utility for them to be removed completely.It's also a good idea to temporarily disable Firewall to see if it fixes the issue.Method 4: Check Hosts FileYour host file might be preventing iTunes from contacting Apple's update server. In such a case, make sure that it is not blocking the communication. This can be done by removing the ‘gs.apple.com' line in the hosts file. Go to Micro