HT4097 my problem..selepas step 6 hanya ada restore sahaja,tetapi bila tekan restore ,tertulis,'the ipad'ipad' could not be restore.And unknown error (21)...what it the problem

after update from 4.3.3 t0 5.1.1 ipad first
ipad can cannot the itunes..but itunes find the recovery
my problem..selepas step 6 hanya ada restore sahaja,tetapi bila tekan restore ,tertulis,'the ipad'ipad' could not be restore.And unknown error (21)...what it the problem

iPad: Basic troubleshooting
http://support.apple.com/kb/TS3274
Update and restore alert messages on iPhone, iPad, and iPod touch
http://www.buybuyla.com/tech/view/012953a0d412000e.shtml
iOS: Resolving update and restore alert messages
http://support.apple.com/kb/TS1275
iPad: Unable to update or restore
http://support.apple.com/kb/ht4097
iTunes: Specific update-and-restore error messages and advanced troubleshooting
http://support.apple.com/kb/TS3694
 Cheers, Tom

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HT1338 Problem! What to do if my mac prompts this message on App Store? "we could not complete your purchase: unknown error"

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Hello, I have a problem with iPhone 5c softhware update ( The iPhone "iPhone" could not be restored. An unknown error occurred (27))

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This may indicate a hardware issue with your device. Follow Troubleshooting security software issues, and restore your device on a different known-good computer. If the errors persist on another computer, the device may need service.
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HT201210 My iphone restored problems, and it can't be restored, if restored :like this What is this message : The iphone 'iphone' could not be restored.An unknown occurred(-1).

What is this message : The iphone 'iphone' could not be restored.An unknown occurred(-1).

What is this message : The iphone 'iphone' could not be restored.An unknown occurred(-1).
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The iPod "iPod" could not be restored because it is busy

My 20g ipod started giving me trouble a few weeks ago after I loaded some post-Christmas purchases. It wouldn't load the last few songs, and it was half-empty, so capacity wasn't an issue.
I next tried to restore the iPod, but my mac mini then seized up, and the restart hung, so I had to do a hard restart.
Upon restart, the iPod was obviously now corrupted, with only a half-completed restore, so I tried again.
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Today, I downloaded iTunes 7.6 with the hope that it would fix this issue, as it has been surfacing in discussions pretty commonly. I thought this was reasonable, because of some difficulties with iTunes after the release of the iPhone were solved upon the next release of iTunes.
Unfortunately, I am facing the exact same situation.
There is one additional step I was able to take by trial and error, and one further step I am considering.
When I originally searched this topic, I came upon a "diagnostic mode" fix that's supposed to be accessed only by the iPod nano.
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I was able to solve this by (warning, this will void your warranty) taking the iPod apart, very carefully. Being careful not to separate the cables inside, place a folded business card on the hard disk, and place the metal half back on.
Do a Google search if you don't believe me.
Oh, and for the gent from Apple that removed the post containing URL with pictures of this fix, I do NOT receive any cash, complensation, self esteem or other recompense or good feeling from posting this fix, or directing people to search for it.

The iPod 'iPod' could not be restored.An unknown error occured(9).

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IPhone 3GS - The iPhone "iPhone" could not be restored. An unknown error occurred (1013)

Hey everyone,
First off, here are my specs:
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Have a read of this it may help http://support.apple.com/kb/ht4097

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I have been trying to update my iPhone's software for the past few weeks due to my current provider not being found. (A bar that says "Searching" is always at the top where my 3G should be.) Yet whenever I try directly from my iPhone, it always end with an error message. So, yesterday I tried updating directly from itunes and I let it download the new update and all that. However, after it finished trying to update my iPhone, it put my iPhone in a recovery mode and I've been trying to fix it eversince. I can not access my iPhone, all it has is an icon saying to connect to itunes. I've tried troubleshooting, checking my software, updating my computer etc. yet it still leaves me with this message: "The iPhone "iPhone" could not be restored. An unknown error occurred (-1)." I've looked on the apple site and I've made sure my security is up to date, my computer is up to date, my itunes is up to date and that I have restarted my computer. I am very irritated and I don't know what to do. I don't know what to do because my warranty is over with apple and I still have a few years on my contract. This problem has become relatively frequent with the replacement I've received from apple.
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"the iphone "iphone "could not be restored. An unknown error occurred (6)"

After trying to download a few applications and being told I needed a more up to date operating system on the iPhone I decided to plug it into iTunes on my PC (running Vista) and update the operating system.
As the process was trying to do a restore the iPhone following error message appeared:
"the iphone "iphone "could not be restored. An unknown error occurred (6)"
Now the phone will not turn on it just shows the iTunes symbol, the USB cable with pointing to the iTunes symbol.
I’ve tried:
1. re-booting the PC (same error message when doing a restore)
2. changing USB port (same error message when doing a restore)
3. Uninstalling and re-installing iTunes (same error message when doing a restore)
4. I tried to put the phone in recovery mode following some steps seen on another forum (holding the power and home button then releasing the power button after 10 seconds) but it does not work as expect the phone is seen instantly. Then the restore just says the same error message.
Other info:
• I bought my iphone just over a year ago so the warranty has just expired.
• This is the first time I have plugged it into my PC since activating it and what’s more this PC is not the same one I activated it on (got a new PC).
• It is a 3G phone.
• I have not attempted Jailbreak or anything like that.
Any help would be greatly appreciate a my phone is effectively broken, I have nearly a year left on the contract and no warranty.

Hi
I followed this guy's instructions and it worked:
http://evsiphone.blogspot.com/2009/05/iphone-iphone-could-not-be-restored.html
I did disable the security (AVG and Zone Alarm) when I tried on my own PC. My wife's laptop which eventually got it working also uses AVG and Zone Alarm but on an XP O/S whereas my PC is Vista - maybe this is why.
Cheers for you help.
Andy
Message was edited by: bigbadandy

When tried to upgrade iphone 4S from 8.1.2 to 8.1.3 it crushed at the middle, after it it not let it tern on and cannot make recovery and crush in the middle of the process with "could not be restored. An unknown error occurred (3014)"

When tried to upgrade iphone 4S from 8.1.2 to 8.1.3 it crushed at the middle.
After it it not let it tern on and cannot make recovery and crush in the middle of the process with "could not be restored. An unknown error occurred (3014)"

Hi bahaluly,
Thanks for using Apple Support Communities. Based on what you stated, it sounds like you are not able to update the iPhone. I would recommend that you read this article, it may be able to help the issue.
Get help with iOS update and restore errors - Apple Support
Solve network errors
Related errors: 17, 1638, 3014, 3194, 3000, 3002, 3004, 3013, 3014, 3015, 3194, 3200, or "There was a problem downloading the software," or "The device isn't eligible for the requested build." These alerts mean that your computer is either having difficulty contacting the Apple update server or communicating with your device.
Check your computer for software or settings that might cause communication issues between your computer and Apple or between your computer and your device.
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Mario

The ipod "ipod" could not be restored. An unknown error occurred (1602)

After trying to update ipod, during the phase where I had to back-up the ipod, an error message popped up (I can't remember what it said). Now, the ipod is just stuck on the "plugin to itunes" icon. Itunes and my computer can't recognize my ipod anymore. I have tried putting it into DFU mode and my computer detects my ipod and begins installing the drivers. On my first attempt, the drivers installation failed, so I reinstalled itunes and quicktime. Then after putting it into DFU mode again, it begins installing the drivers, but this time it was successful. Now I had the option to 'restore' my ipod so I did what I could. However, when I was installing it, 2 more drivers had to be installed and they were successful, however, I get this error message:
The ipod "ipod" could not be restored. An unknown error occurred (1602)
Any help would be greatly appreciate. Thanks very much for your time.

Error 1600, 1601, 1602: Try the following steps to resolve this error:
Ensure proper USB isolation troubleshooting has been performed, and test with a known-good cable.
Follow the steps listed for Error 1604.
This error may be resolved by disabling, deactivating, or uninstalling third-party security, antivirus, and firewall software. See steps in this article for details on troubleshooting security software.
Error 1604: This error is often related to USB timing. Try changing USB ports, uninstalling and reinstalling USB ports, and other available USB troubleshooting steps (troubleshooting USB connections, device not recognized properly, computer won't recognize a FireWire or USB device). If you are using a dock, bypass it and connect directly to the white Apple USB dock connector cable. If the issue persists on a known-good computer, the device may need service.
If the issue is not resolved by USB isolation troubleshooting, and another computer is not available, try these steps to resolve the issue:
Connect the device to iTunes, confirm that the device is in Recovery Mode. If it's not in Recovery Mode,put it into Recovery Mode.
Restore and wait for error 1604.
When prompted, click OK.
Close and reopen iTunes while iPhone remains connected.
iPhone should now be recognized in Recovery Mode again.
Try to restore again.
If the steps above do not resolve the issue, try restoring using a known-good USB cable, computer, and network connection.
Above from:
http://support.apple.com/kb/TS3694#error1601

TS3694 the ipod"ipod" could not be restored. An unknown error occurred (3194)

the ipod"ipod" could not be restored. An unknown error occurred (3194)
How do I restore my ipod. Right now can not access it at all . Picture of itunes icon and my cable all that is showing

This device is not eligible for the requested build (Also sometimes displayed as an "error 3194")
Update to the latest version of iTunes.
Third-party security software or router security settings can also cause this issue. To resolve this, followTroubleshooting security software issues.
Downgrading to a previous version of iOS is not supported. If you have installed software to performunauthorized modifications to your iOS device, that software may have redirected connections to the update server (gs.apple.com) within the Hosts file. Uninstall the unauthorized modification software from the computer.
Edit out the "gs.apple.com" redirect from your hosts file, and then restart the computer for the host file changes to take affect. For steps to edit the Hosts file and allow iTunes to communicate with the update server, see iTunes: Troubleshooting iTunes Store on your computer, iPhone, iPad, or iPod—follow steps under the heading Blocked by configuration (Mac OS X / Windows) > Rebuild network information > The hosts file may also be blocking the iTunes Store. If you do not uninstall the unauthorized modification software prior to editing the hosts file, that software may automatically modify the hosts file again on restart.
Avoid using an older or modified .ipsw file. Try moving the current .ipsw file (see Advanced Steps > Rename, move, or delete the iOS software file (.ipsw) below for file locations), or try restoring in a new user to ensure that iTunes downloads a new .ipsw.
Unable to contact the iOS software update server gs.apple.com
Error 1004, 1013, 1638, 3194: These errors may be the result of the connection to gs.apple.com being redirected or blocked. Follow these steps to resolve these errors:
Install the latest version of iTunes.
Check security software. Ensure that communication to gs.apple.com is allowed. Follow this article for assistance with security software. iTunes for Windows: Troubleshooting security software issues.
Check the hosts file. The restore will fail if there is an active entry to redirect gs.apple.com. Follow iTunes: Advanced iTunes Store troubleshooting to edit the hosts file or revert to a default hosts file. See section "Blocked by configuration: (Mac OS X/Windows) > Rebuild network information".
Try to restore from another known-good computer and network.
If the errors persist on another computer, the device may need service.
Error 3194: You may not have the latest version of iTunes installed Update to the latest version of iTunes. If the issue persists, follow the steps above in "Unable to contact the iOS software update server gs.apple.com".

HT4097 my problem..selepas step 6 hanya ada restore sahaja,tetapi bila tekan restore ,tertulis,'the ipad'ipad' could not be restore.And unknown error (21)...what it the problem

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