How to restore ios on iphone 4s? when I connecting itune after extracting it sows can not restore. error (21). how to solve this problem?

how to restore ios on iphone 4s? when I connecting itune after extracting it sows can not restore. error (21). how to solve this problem?

how to restore:
http://support.apple.com/kb/HT1414
error code 21 fix
http://support.apple.com/kb/TS3694#error1015

Similar Messages

  • HT1349 The nice man Joseph Shen helped me with my google problem on my iPhone and worked for 2 days and now not working again please help me solve this problem were I can retrieve my messages on the I phone when I am not at home  on my wi Fi is the only t

    The nice man Joseph Shen helped me with my google problem on my iPhone and worked for 2 days and now not working again please help me solve this problem were I can retrieve my messages on the I phone when I am not at home  on my wi Fi is the only time it works correct. Bill. [email protected]  708 752  3667 

    http://lifehacker.com/5852948/what-to-do-if-youve-forgotten-your-iphones-passcod e

  • Hello i have a  an iPhone 5 .i updated it in the end of summer or begin of fall because i forget the number of  version.it is important that i update my i Phone by itself not with iTune . after that my device can not  join to wifi to internet but another

    hello
    i have a  an iPhone 5 .i updated it in the end of summer or begin of fall because i forget the number of  version.it is important that i update my i Phone by itself not with iTune . after that my device can not  join to wifi to internet but another of app works properly and cellular can join to internet . i reset my i phone in the setting . general section but my problem  is remaining .is possible that to return to older version? if there is any solution share with me and i be very thankfulness of you.tanks again 

    It is not possible to downgrade to an earlier version.
    Have you tried the tips on this help page? iOS: Troubleshooting Wi-Fi networks and connections
    And you dont need iTunes to update you're device. You can update it OTA in Settings > General > Software Update

  • Hello i have a  an iPhone 5 .i updated it in the end of summer or begin of fall because i forget the number of  version.it is important that i update my i Phone by itself not with iTune . after that my device can not  join to wifi to inter net but another

    hello
    i have a  an iPhone 5 .i updated it in the end of summer or begin of fall because i forget the number of  version.it is important that i update my i Phone by itself not with iTune . after that my device can not  join to wifi to inter net but another of app works properly and cellular can join to internet . i reset my i phone in the setting . general section but my problem  is remaining . if there is any solution share with me and i be very thankfulness of you.tanks again

    It is not possible to downgrade to an earlier version.
    Have you tried the tips on this help page? iOS: Troubleshooting Wi-Fi networks and connections
    And you dont need iTunes to update you're device. You can update it OTA in Settings > General > Software Update

  • HT201442 I am got error while trying to restore,, but i just only error file with 3194. I try many step by install lastest version and fix host file, but still fail. Anybody can give me any key point to solve this problem? Thank you

    I am got error while trying to restore,, but i just only error file with 3194. I try many step by install lastest version and fix host file, but still fail. Anybody can give me any key point to solve this problem? Thank you

    Error 3194:
    This device isn't eligible for the requested build
    It means that Apple has stopped signing the version of iOS that you have, try downloading the latest iOS version, then try Restore again.

  • Can not restore i phone 3 G after i tune update, can not restore i phone 3 G after i tune update

    can not restore i phone 3 G after i tune update, can not restore i phone 3 G after i tune update

    Search Google for "iphone 3g ipsw" (does not matter which one in your case, just need to restore your phone, then can do whatever).  Open iTunes with your phone connected.  Shift click on "Restore" (Apple click for Mac) and choose the IPSW file you downloaded.  That is called a manual restore.  Should help you out.
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  • When i enter time machine with mail open can see past mail .  when i open iPhoto and enter time machine can not see past photos  have i got a problem  ????

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    iPhoto '11: Restoring from Time Machine with iPhoto '11 (9.2 or later) and OS X Lion 10.7.2 (or later)

  • I am having a Startup problem. Someone comes on the screen with Open Firmware to Startup. How can I reset the PRAM myself to solve this problem?

    I am having a Startup problem. Someone comes on the screen with Open Firmware to Startup. How can I reset the PRAM myself to solve this problem?

    Read these.
    http://support.apple.com/kb/HT1431
    http://reviews.cnet.com/8301-13727_7-10330118-263.html

  • When i change my ios to ios7 .. I notice the sound is distorted and 1chanel is only working any means to solve this problem?

    How can i solve this problem???

    Try a reset. Hold down on the sleep and home buttons at the same time until the Apple logo appears on the screen. Let go of the buttons and let the iPad start up.

  • HT4527 I transeferred my itunes to a new computer via external hard drive, however over 4000 plus songs have a ! mark beside it and they cannt be played as itunes states that the location can not be found.  how do i fix this so all my music can be played.

    Hi
    I recently moved my itunes to a new computer by using a external hard drive.
    However my itunes music is not all playable.  over 4000 songs have a ! mark and when tried to be played or copied to ipod or iphone, it says that this song cannot be found and asks to locate it. 
    How do i fix this problem so that all my songs are available in itunes

    It is probably best to start over. These are two possible approaches that will normally work to move an existing library to a new computer.
    Method 1
    Backup the library with this User Tip.
    Deauthorize the old computer if you no longer want to access protected content on it.
    Restore the backup to your new computer using the same tool used to back it up.
    Keep your backup up-to-date in future.
    Method 2
    Connect the two computers to the same network. Share your <User's Music> folder from the old computer and copy the entire iTunes library folder into the <User's Music> folder on the new one. Again, deauthorize the old computer if no longer required.
    Both methods should give the new computer a working clone of the library that was on the old one. As far as iTunes is concerned this is still the "home" library for your devices so you shouldn't have any issues with iTunes wanting to erase and reload.
    I'd recommend method 1 since it establishes an ongoing backup for your library.
    If you have an iOS device that syncs with contact & calendar data on your computer you should migrate this information too. If that isn't possible create a dummy entry of each type in your new profile and iTunes should offer to merge the existing data from the device into the computer, otherwise the danger is that it will wipe the information from the device.
    If your media folder has been split out from the main iTunes folder you may need to do some preparatory work to make it easier to move. See make a split library portable.
    Should you be in the unfortunate position where you are no longer able to access your original library, or a backup of it, then see Recover your iTunes library from your iPod or iOS device for advice on how to set up your devices with a new library with the maximum preservation of data. If you don't have any Apple devices then see HT2519 - Downloading past purchases from the App Store, iBookstore, and iTunes Store.
    tt2

  • After Installing Lion I can not restore the latest iOS because I seems that I do not have the rights to do it

    haven't you have problems trying to upgrade to iOS 4.3.5? I installed MAC OS 10.7 and now I'm receiving a message saying that I don't have the rights, however I can sync it without any problems.

    Sorry to be so late getting back to you. My furnace died and I was a week without heat. Everything's ok now.
    I was able to grab an old firefox from an external drive (thank God for backups!) and I used that along with the link that you sent me for older versions and I was able to download the version before the current update.
    Thank you for your help.

  • After 5.0 update can not restore phone

    I updated to 5.0 then my Iphone 3GS was blank. I tried to restore my phone several times and it keeps saying unknown error. Now my phone is blank. It keeps saying plug into Itunes.

    Search Google for "iphone 3g ipsw" (does not matter which one in your case, just need to restore your phone, then can do whatever).  Open iTunes with your phone connected.  Shift click on "Restore" (Apple click for Mac) and choose the IPSW file you downloaded.  That is called a manual restore.  Should help you out.
    BF

  • I do not remember the answers to my iTunes security questions and I can not reset them.  How do I do it?

    I cannot remeber the secruity question answers and the system won't let me reset them.  How do I reset the questions?

    Welcome to the Apple Community.
    Start here, and reset your security questions, you will receive an email to your rescue address, use the link in the email and reset your security questions.
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  • I have a IPhone 5 and Iphone 5s. Both are set up with the same account ID and running IOS 8.0.2. When the phones are connected to the same Wifi at home, both phones will ring when someone call in to one of the phone.  Anyway to solve this problem?

    I have a IPhone 5 and Iphone 5s, each phone is activited with a different service provider. Both are set up with the same account ID and running IOS 8.0.2. When the phones are connected to the same Wifi at home, both phones will ring when someone call in to one of the phone.  Hence you do not know exactly which line the caller called.  If you answered using the wrong phone, then anyone calling the other number will not get through.  Anyway to solve this problem?

    Hey David Koh TP,
    Thanks for the question. It sounds like your devices are set up to use continuity together. Specifically, it sounds like you are signed into the same Apple ID in FaceTime, and have iPhone Cellular Calls enabled. To resolve your issue, simply disable this setting:
    Connect your iPhone, iPad, and iPod touch using Continuity
    http://support.apple.com/kb/HT6337
    Turn off iPhone cellular calls
    To turn off iPhone Cellular Calls on a device, go to Settings > FaceTime and turn off iPhone Cellular Calls.
    Thanks,
    Matt M.

  • My ipad wont switch on and i can not restore it...help?

    My one week old ipad Air has frozen and now wont switch on. I have tried to restore it by holding down the button but nothing happens, when connecting it to I tunes, I can not restore it as it wants me to turn off the find my ipad which I can not turn it on to do and holding down the button and whilst plugging the usb cable in is doing nothing??
    Could anyone help please?

    FORCE IPAD INTO RECOVERY MODE
    1. Turn off iPad
    2. Turn on computer and launch iTunes (make sure you have the latest version of iTune)
    3. Plug USB cable into computer's USB port
    4. Hold Home button down and plug the other end of cable into docking port.
    DO NOT RELEASE BUTTON until you see picture of iTunes and plug
    5. Release Home button.
    ON COMPUTER
    6. iTunes has detected iPad in recovery mode. You must restore this iPad before it can be used with iTunes.
    7. Select "Restore iPad"...
    Note:
    1. Data will be lost if you do not have backup
    2. You must follow step 1 to step 4 VERY CLOSELY.
    3. Repeat the process if necessary.

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