RESTORE failure: "due to unknown error"

ITunes prompted me to install latest update. Install failed and IPhone locked. Got message that indicated IPhone was in recovery mode and needed to be restored. Have attempted restore several times, which always fails with a message that says, "Restore failed due to unknown error." Any suggestions as to how to proceed? Thanks.

exact same thing happened to me when updating to the 2.02 software, error code 2005. i realized that i was using the cable from my originial iphone. it works to charge the 3G iphone and sync, but apparently not to update software. and they are almost impossible to tell apart.
switched to the 3G cable and all was updated and restored. you would think they would either make the cables compatible or clearly identify them as different.

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TS3221 iTunes could not connect device due to unknown error (0xE8000012) please tell me the solotion

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Not sure what to do. finally decided to upgrate software on my phone. installed itunes on my new laptop. plugged by phone in and started process. nearing the end i received an error message stating that the phone "could not be updated due to unknown error" (6). HELP!
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This describes error 6:
Errors related to third-party security software
Error 2, 4 (or -4), 6, 1000, and 9006
Follow the steps to troubleshoot security software. Often, uninstalling third-party security software will resolve these errors.
There may be third-party software that modifies your default packet size in Windows by inserting a TcpWindowSize entry into your registry. An incorrectly set default packet size can cause these errors. Contact the manufacturer of the software that installed the packet size modification for assistance or follow this article by Microsoft: How to reset Internet Protocol (TCP/IP).
Verify that access to ports 80 and 443 are allowed on your network.
Verify that communication to albert.apple.com or phobos.apple.com isn't blocked by a firewall or other Internet security setting.
Discard the .ipsw file, open iTunes and attempt to download the update again. See the steps under "Advanced steps > Rename, move, or delete the iOS software file (.ipsw)" below for file locations.
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Any assistance
Thanks,
Sasi.

Hi Sasi,
One of the reason for this error is corrupted universe.So you can try following steps and restore copy of universe and then try to import this universe and check whether it works.
1.While importing a universe, a temp file is created in the users local settings temp directory.
2. For example C:\Documents and Settings\brijones\Local Settings\Temp\0dd0b0a7 .
3. File has no extension is relatively the same size as the original universe file.
4.Rename this file to original universe name.
I hope it helps.
Regards,
Snehal

I cannot update my iPad and notes it cannot be updated due to unknown error (6). I have not yet updated my Macbook to Yosemite (which I do not intend to do so yet) so would this be the problem and if so, how can I update the iPad?

I cannot update my iPad and notes it cannot be updated due to unknown error (6). I have not yet updated my Macbook to Yosemite (which I do not intend to do so yet) so would this be the problem and if so, how can I update the iPad?
Thanks,
glhiker

Hi glhiker,
I understand that you may be having some issues with your ability to update your iPad. Here is an article that references your error code and can help you take some steps to resolve it:
Resolve iOS update and restore errors - Apple Support
http://support.apple.com/en-us/TS3694
Check your security software
Related errors: 2, 4, 6, 9, 1000, 1611, 9006. Sometimes security software can prevent your device from communicating with either the Apple update server or with your device.
Check your security software and settings to make sure that they aren't preventing a connection to the Apple servers.
Thanks for coming to the Apple Support Communities!
Regards,
Braden

And it wont let me restore it due to some error.

I forgot my ipod touch password it is the current version and it wont let me restore it due to some error please help.

Take this support document and look up some error. Resolve iOS update and restore errors - Apple Support

How do i fix my iphone 5 stuck in recovery mode and wont let me restore it just says unknown error 1603 has occured

how do i fix my iphone 5 stuck in recovery mode and wont let me restore it just says unknown error 1603 has occured

http://support.apple.com/kb/TS3694#error1603
Follow the steps listed above for Error 1604. Also, discard the .ipsw file, open iTunes and attempt to download the update again. See the steps under Advanced Steps > Rename, move, or delete the iOS software file (.ipsw) below for file locations. If you do not want to remove the IPSW in the original user, try restoring in a new administrator user. If the issue remains, Eliminate third-party security software conflicts.
http://support.apple.com/kb/TS3694#error1604
This error is often related to USB timing. Try changing USB ports, using a different dock connector to USB cable, and other available USB troubleshooting steps (troubleshooting USB connections. 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 the error.
When prompted, click OK.
Close and reopen iTunes while the device remains connected.
The device 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.

TS3694 when doing a restore to try and solve a wifi problem with my iphone 5 i got past the point where the software was extracted from my phone but then an error message came up saying that the phone could not be restored because of an unknown error (301

when attempting a restore, as suggested, to try and fix a week wifi signal on my iphone 5 I got past the point where the sopftware was extracted from my phone but then an error message appeared saying that the phone could not be restored becase of an unknown error (3014). I have tried about 20 times to make it work after trying a number of suggestions I have seen online. My phone gives me know response accept showing a picture of the cable and the itunes symble an the screen permanently - please help

Hello JD_NINJA,
Thanks for using Apple Support Communities.
Error 9006 when restoring your iOS device indicates that there is security software on your computer which is preventing connection to the Apple server or your device. To troubleshoot this issue please follow the directions below.
Check your security software
Related errors: 2, 4, 6, 9, 1611, 9006. Sometimes security software can stop your device from communicating with either the Apple update server or with your device.
Check your security software and settings to make sure that they aren't blocking a connection to the Apple servers.
Get help with iOS update and restore errors - Apple Support
When restoring your iPhone, please make sure to follow the directions in the link below to properly restore.
Restore your device from an iCloud or iTunes backup - Apple Support
Take care,
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HT201210 iTunes has detected an iphone in recovery mode. You must restore this iPhone before it can be used with iTunes. iphone could not be restored. Then aAn unknown error occuired(1604)

when I power on it shows go itune logo starts. Then I tried to download restore and update it shows Tunes has detected an iphone in recovery mode. You must restore this iPhone before it can be used with iTunes. iphone could not be restored. Then an unknown error occuired(1604) shows.an unknown error occuired(1604). Please help me and how can I restore the phone OS. Regards

It also happened to me. What I did was to put my USB connector at the back of my PC (the main USB port) then I open my iTunes again and Viola, it solves my problem.

HT201210 my i phone 4 wont restore because of an unknown error (21)

my i phone 4 wont restore because of an unknown error(21)???

Error 20, 21, 23, 26, 28, 29, 34, 37
These 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.

HT201210 my iphone wont restore coz of an unknown error plz help

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Portlet cannot be displayed due to unknown error

In our application we are getting Error, "portlet cannot be displayed due to unknown error" from ALUI portal. There is no enough informaiton apart from this. This error is not consistent, can happen any time.
Can you please advice what could be the cause?
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Start the "BEA Ali Logger service" on your portal server machine. Then when the problem occurs you can analyze \bea\alui\ptlogging\logs\portal\portalserver-log.spy to find out more information about what might be causing the problem. You can also set up a wireshark network capture log using the ringbuffer mode which lets you collect logs in a loop. This way if there are network issues you can find out about that too. If you're not comfortable setting these up or analyzing them an oracle support engineer can assist you if you open a case.

ITunes Cannot connect to iPhone due to unknown error (0xE8000065)

Hello!
When I plugin my iphone to a wall, it refuses to charge (it just keeps making a bleeping noise).
And when I try to connect my iPhone to iTunes, I can't. It just says: iTunes Cannot connect to iPhone due to unknown error (0xE8000065)
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HT201210 iphone 4s stopped in middle of update (via wireless). apple logo and usb picture appeared on phone. When i plugged in to computer, indidcated I would have to restore. in the middle of restoring, i got a "unknown Error" (1) code and the apple id

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Hello Maxayla,
It sounds like you are getting error code 1 when you were attempting a restore. I would use these troubleshooting steps from the following article which mentions that error code:
Resolve specific iTunes update and restore errors
http://support.apple.com/kb/ts3694#1
Check for hardware issues
Related errors: 1, 3, 10, 11, 12, 13, 14, 16, 20, 21, 23, 26, 27, 28, 29, 34, 35, 36, 37, 40, 1000, 1002, 1004, 1011, 1012, 1014, 1667, or 1669.
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Thank you for using Apple Support Communities.
All the very best,
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I have the exact same problem.
Been searching through this site to try and find an answer but still not come up with anything.
The wierd thing is that a couple of days ago it was working fine, and suddenly overnight it's stopped working.
The only solution i've found is that you need to have administrator rights as it says in the posts on the site below:
http://www.emergingearth.com/itunes-7-cant-burn-cds/
Noticed by the diagnostic in your post that you dont have admin rights like me so that mite be the problem. Not sure if this is the right solution though.
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RESTORE failure: "due to unknown error"

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