Itunes Unknown Error 21
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Close × Menu Repair Guides Answers Forum Parts & Tools Store Teardowns Translate Join Log In GO iFixit Fast Order Create a Page Edit Billing Info Order History Logout Join iphone 5 error 21 Log In Repair Guides Answers Forum Parts & Tools Store Teardowns Translate error 21 itunes « Back to Answers Index 81953 iPhone 4 Repair Fourth generation iPhone. Repair is straightforward, but the front iphone 6 error 21 glass and LCD must be replaced as a unit. GSM / 8, 16, or 32 GB capacity / Model A1332 / Black and White. iphone 4 restore fail 3126 iphone error 11 Questions View all Clew Rep: 781 2 2 1 Posted: 03/05/2012 Options Permalink History Subscribe Unsubscribe iPhone4 won't restore and shows Error 21 My phone won't turn on, but shows the Apple logo when I plug it in (either to the wall charger or the computer). Then, it goes to the Connect to iTunes screen and when I connect it
The Iphone Could Not Be Restored An Unknown Error Occurred 29
to iTunes it tells me that I need to restore the phone. It will get all the way to "preparing iPhone for restore" then will say, "The iPhone could not be restored. An unknown error occurred (21)." I tried to disable my computer security, but it did the same thing. Does anyone know what else I could do to fix it? Please help! Answer this question I have this problem too Subscribed to new answers Is this a good question? Yes No Voted Undo Score 65 Cancel Comments: my iPhone does the same thing 12/27/2014 by imani I just had this error, I removed screen, changed battery for another one from a spare phone, connected old screen back on, and YES no more error 21, phone restored fine and working without problem. 01/06/2015 by jeffa ps old battery ribbon connection was damaged. 01/06/2015 by jeffa my phone restore, keep getting Error YES no more error 21, phone restored 04/22/2015 by Ankit Gupta i need help mine does the same thing and it gets me so frusturated
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
Iphone 4s Error 21 Hardware Solution
below to learn what to do. Choose your error number or messageSelect your error iphone could not be restored error 29 to learn what to 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." iphone error 21 iphone 6 "The device isn't eligible for 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 https://www.ifixit.com/Answers/View/81953/iPhone4+won't+restore+and+shows+Error+21 the download to finish and try again. To 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 https://support.apple.com/en-us/HT204770 problem downloading the software." "The device isn't eligible for the requested 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 canch
error 21 in this iPhone 4 Leon Stacey SubscribeSubscribedUnsubscribe11,02011K Loading... Loading... Working... Add to Want to watch this again later? Sign in to add https://www.youtube.com/watch?v=mH62v_3S_Mc this video to a playlist. Sign in Share More Report Need to report the video? Sign in to report inappropriate content. Sign in Transcript Statistics 392,045 views 347 http://jaxov.com/2011/03/how-to-fix-itunes-error-21-during-custom-ipsw-restore/ Like this video? Sign in to make your opinion count. Sign in 348 59 Don't like this video? Sign in to make your opinion count. Sign in error 21 60 Loading... Loading... Transcript The interactive transcript could not be loaded. Loading... Loading... Rating is available when the video has been rented. This feature is not available right now. Please try again later. Published on Mar 27, 2012http://www.thecomputerroomnottingham.... - 0115 972 1120 Serving Nottingham Derby and Leicester with parts and repair for iPhone, iPod, iphone could not pc and mac of all kinds.This is showing how we fixed error 21 in this iPhone that was sent to us.This movie is for showing an example of what The Computer Room Nottingham can do for any issues you may have with computers, iphones and ipods. It was made by Leon Stacey and is no way a guide of how repairs can be performed by anyone else and to that end, The Computer Room Nottingham and Leon Stacey cannot be held responsible for anything that happens from you undertaking repairs yourself of any nature. Terms and Conditions of using our services are at www.thecomputerroomnottingham.co.uk/terms-and-conditions. Category Science & Technology License Standard YouTube License Show more Show less Loading... Advertisement Autoplay When autoplay is enabled, a suggested video will automatically play next. Up next How To Fix The Error 21 When Restoring Your iDevice. (WhiteTech) - Duration: 1:41. MattyTheCanadian 127,716 views 1:41 how to fix iphone 4 not turning on battery issue -
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 iPhone Unlock Unlock iPhone Unlock iPhone 3Gs Unlock iPhone 4 Unlock iPhone 4s Ultrasn0w News 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 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 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
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