Error Itunes 21
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basic stepswhen you see this message: "The iPhone [device name] could not be restored. An unknown error occurred [error number]." If you still see the error message, find your error below to learn what itunes error 1600 to do. Choose your error number or messageSelect your error to learn what to
Itunes Error 21 Fix
do: 1,2,3,4,6,9,10,11,12,13,14,16,17 20,21,23,26,27,28,29,34,35,36,37,40,53,56 1002,1004,1011,1012,1014,1015 1600,1601,1602,1603,1604,1611,1638,1643-1650,1667,1669, 1671 2001,2002,2005,2006,2009 3002,3004,3013,3014,3015,3194,3200 4005,4013,4014 "There was a problem downloading the software." "The device isn't eligible for itunes error 21 iphone 4 the requested build." "Invalid response." "The required resource can't be found." Check for communication issuesIf you see error 1671, iTunes is downloading necessary software. Wait for the download to finish and try again. To itunes error 3194 see how long the download should take, you can click the down arrow in the upper-right corner of iTunes. If you see one of the issues below, your computer might not be able to connect to Apple servers or your iPhone, iPad, or iPod touch: 17, 1638, 3014, 3194, 3000, 3002, 3004, 3013, 3014, 3015, 3194, 3200 "There was a problem downloading the software." "The device isn't eligible for the requested
Itunes Error 2131
build." Check for communication issues between iTunes and Apple software-update servers.Also check forissues with third-party security software. If you still see an error message, contact Apple Support. Check your security software If you see error 9, learn what to do. If you see errors 2, 4, 6, or 1611 check forissues with third-party security software. Alsocheck for USB connection issues. If you still see an error message, contactApple Support. Check your USB connectionsIf you see error 4005, 4013, or 4014,learn what to do. If you see one of the errors below, you might have a USB connection issue: 13, 14, 1600, 1601, 1602, 1603, 1604, 1611, 1643-1650 2000, 2001, 2002, 2005, 2006, 2009 An error message that includes, "invalid response" Use these steps to see if the issue is with your USB cable, USB port, or computer. Try again after each step: Use the USB cable that came with your device. If you don't have it, try a different Apple USB cable. Switch to a different USB port on your computer. Don't plug into your keyboard. Plug into a different computer. If you still see the error, you cancheck for other USB issues, issues withthird-party security software, andissues with hardware. If the issue continues, contactApple Support. Check for hardware issuesIf y
not post a blank message. Please type your message and try again. _Alama_ Level 1 (0 points) Q: Can "unknown error 21" be fixed ?? (iphone 4) Recently my iPhone 4 just reset itself out of nowhere and wouldn't turn back on. I placed it on a dock & the connect itunes error 1013 to itunes screen showed up. I plugged it into my computer and when it began to itunes error 1601 restore it stopped and the unknown error 21 window popped up. This has occured on 3 different computers & now I'm unsure how to
Itunes Error 21 Iphone 5
handle this. -Please help. iPhone 4, iOS 6 Posted on Jun 20, 2013 1:54 PM I have this question too Close Q: Can "unknown error 21" be fixed ?? (iphone 4) All replies Helpful answers Page 1 Next by KiltedTim, KiltedTim https://support.apple.com/en-us/HT204770 Jun 20, 2013 1:59 PM in response to _Alama_ Level 9 (56,154 points) Mac OS X Jun 20, 2013 1:59 PM in response to _Alama_ http://support.apple.com/kb/ts3694#error21Error 20, 21, 23, 26, 28, 29, 34, 36, 37, 40These errors typically occur when security software interferes with the restore and update process. FollowTroubleshooting security software issues to resolve this issue. In rare cases, these errors may be a hardware issue. If the errors persist on another computer, the device may need service.Also, check your hosts https://discussions.apple.com/thread/5118033?tstart=0 file to verify that it's not blocking iTunes from communicating with the update server. See iTunes: Advanced iTunes Store troubleshooting--follow steps under the heading Blocked by configuration (Mac OS X / Windows) > Rebuild network information > Mac OS X > The hosts file may also be blocking the iTunes Store. If you have software used to perform unauthorized modifications to the iOS device, uninstall this software prior to editing the hosts file to prevent that software from automatically modifying the hosts file again on restart. Helpful (0) Reply options Link to this post by simonege, simonege Sep 3, 2013 7:03 AM in response to _Alama_ Level 1 (0 points) Sep 3, 2013 7:03 AM in response to _Alama_ Did you solve it? I have the same problem with my ipad 2. Helpful (0) Reply options Link to this post by OnceUponAnAppleCare, OnceUponAnAppleCare Mar 17, 2014 1:32 PM in response to _Alama_ Level 1 (0 points) Mar 17, 2014 1:32 PM in response to _Alama_ Typically Yes That k-base document will resolve, OR at least help....This is how you see if it is your computer software causing the issue OR if it is the battery in your unit. attempt to restore the device, when you recieve error 21 (unable to restore "device" unknown error occured 21)make sure your device has been plugged in long enough to recieve some sort of charge. ( computer, dock, charger makes no difference) Unplug the unit..... Did i
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 Sn0wbreeze Absinthe Blackra1n LimeRa1n JailbreakM Redsn0w Greenpois0n PwnageTool Seas0nPass http://jaxov.com/2011/03/how-to-fix-itunes-error-21-during-custom-ipsw-restore/ iPhone Unlock Unlock iPhone Unlock iPhone 3Gs Unlock iPhone 4 Unlock iPhone 4s Ultrasn0w News https://drfone.wondershare.com/iphone-problems/iphone-error-21.html IOS Wiki Fix iTunes Error 21 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 using custom IPSW made by PwnageTool or Sn0wbreeze requires a full firmware restore using iTunes. During the restore process, if you itunes error 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 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 itunes error 21 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
Contact Us for News Tips, Corrections and Feedback Related posts How to Fix “This copy of iTunes is corrupted or is not installed correctly. Please reinstall iTunes. (-42037)” How to Enter DFU Mode With Broken Home Button How to Fix iPhone Boot Loop Issue 116 comments Click here to cancel reply. Leave a message... your details Notify me of followup comments via e-mail. YouRestore iOS Viber Backup & Restore iOS Kik Backup & Restore iOS LINE Backup & Restore iOS Full Data Eraser iOS Private Data Eraser SIM Unlock Service iOS Screen Recorder Android Data Recovery Android Lock Screen Removal Android Data Extraction Android Data Backup & Restore Android SIM Unlock Android Root SIM Unlock Service More Phone Tools MobileTrans Phone Transfer MirrorGo Android Recorder Windows Mac Dr.Fone Toolkit iOS Data Recovery iOS System Recovery iOS Data Backup & Restore iOS WhatsApp Transfer, Backup & Restore iOS Full Data Eraser iOS Private Data Eraser iOS Kik Backup & Restore iOS Viber Backup & Restore iOS LINE Backup & Restore iOS Screen Recorder Android Data Extraction Android Lock Screen Removal Android Data Recovery Android Data Backup & Restore Android SIM Unlock Android Root More Phone Tools MobileTrans Phone Transfer MirrorGo Android Recorder Dr.Fone Toolkit iOS Data Recovery iOS System Recovery iOS Data Backup & Restore iOS WhatsApp Transfer, Backup & Restore iOS Full Data Eraser iOS Private Data Eraser iOS Kik Backup & Restore iOS Viber Backup & Restore iOS LINE Backup & Restore Android Data Recovery More Phone Tools MobileTrans Phone Transfer For iOS devices For Android devices For iOS devices For Android devices Top Products Filmora Video Editor Easy & trendy video editor with rich filters and transitions. Video Converter Ultimate Your complete video toolbox: download, convert, edit, burn and more. PDFelement - PDF Editor Easily Create, Edit, Convert, Sign, OCR PDF files. Change the way you work with PDF. Dr.Fone - iPhone Data Recovery The world's 1st iPhone and iPad data recovery software. Dr.Fone - Android Data Recovery The world's 1st data recovery software for Android phones and tablets. Data Recovery Retrieve your lost/deleted files from PC/Mac and storage devices including hard drive, memory card,