HT201210 restoring iphone4 unknown error 2001

Iphone4 on my table, then when i checked it was off.. tried to search all the possibilities, and do it step by step by restoring my phone on itunes,
then when restoring my phone on itunes "unknown error (2001)" appeared..
can some one please help me regading this matter. APPLE Co.?

Errors 2000-2009 (from Apple support): If you experience this issue on a Mac, disconnect third-party devices, hubs, spare cables, displays, reset the SMC, and then try to restore. If you are using a Windows computer, remove all USB devices and spare cables other than your keyboard, mouse, and the device, restart the computer, and try to restore. If that does not resolve the issue, try the USB issue-resolution steps and articles listed for Error 1604. If the issue persists, it may be related to conflicting security software.
Error 2001
The Mac OS X kernel extension "IOUSBFamily" that was bundled with late 2008 / early 2009 MacBooks, as well as the 10.5.6 update, has a bug where it fails to properly recognize an iDevice in DFU Mode. It can be resolved by updating to 10.5.7 (or later), or using a USB hub.

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HT201210 Iphone 3gs needs to restore as cannot turn phone on but cannot restore as unknown error 2001 keeps coming up. I have tried several times on different computers. Any help or ideas?

Iphone 3gs needs to restore as I cannot turn phone on but cannot restore as unknown error 2001 keeps coming up.
I have tried several times on different computers. Any help or ideas? Thanks

Hi there Katherine,
I have an article here that addresses this error code and can give you a few more troubleshooting suggestions for this issue:
Resolve specific iTunes update and restore errors
http://support.apple.com/kb/ts3694
Check USB connections
If there’s an issue with the USB port, cable, dock, or hub, or if the device becomes disconnected during restore, try troubleshooting the USB connection, then troubleshooting your security software.
Common errors: 13, 14, 1600-1629, 1643-1650, 2000-2009, 4000, 4005, 4013, 4014, 4016, “invalid response”, and being prompted to restore again after a restore completes.
To narrow down the issue, you can also change up your hardware:
Use another USB cable.
Plug your cable into a different USB port on your computer.
Try a different dock connector (or no dock).
Add (or remove) a USB hub between your device and computer.
Connect your computer directly to your Internet source, with no routers, hubs, or switches.
If you see your error after changing your USB connections, continue to the next section to troubleshoot your hardware.
Thanks for coming to the Apple Support Communities!
Regards,
Braden

HT201210 What is Unknown error 2001, iPhone could not be restored.

These error message is not listed in common issues for iPhone 4 trouble shooting. Does any one knows what is about, or any approach to solve this matter?

Close iTunes and unplug iphone
Search web and download the 2.2.1 ipsw file.
Go to device manager on PC and delete the USB option for Apple under the hardware options.
Reboot PC
Plug in iphone and wait for dreaded connection picture
hold power button and home button until apple logo appears
continue to hold home button and release power button until connection picture appears again
Your PC should now find the iphone in recovery mode
Now open iTunes and it will prompt you to restore
Hold the shift button on the keyboard and click the restore button at the same time
This will allow you to browse for the correct ipsw file
select the 2.2.1 file that you downloaded
your iphone will now restore
Once completed, you will need to resync
Now you are back to square one but at least have a phone that works
Now make an appt at the Genius Bar and make them update it for you
Mine is scheduled for next week

Cannot Restore Unknown error 2001

iTunes says it cannot restore my iTunes and has an Unknown Error 2001. It all started after it failed the new update. Any ideas?

Hi amigos:
Same happen to me as soon as the new release (1.1.3). Sounds weird but the only think you have to do is plug and unplug your iPod 3 0r 4 times.
I can assure you that after 4 or 5 tries everything will be ok.
Why is happening that?
Think Apple sold so many iPod (4,000,000) and we are trying to get it at the same time, so they cant handle to manage all of them. Maybe there is not as much slot as they need for everyone to download the new version. Because you cant download the new release your iPod don't get the new software while the old one is deleted.
Believe me, try to plug/unplug 4 or 5 times at the problem will be solve. Or much better, just next time don't try to upgrade as soon as the new release is on iTunes and wait 1 week

HT1414 Mine keeps on saying that the device could not be restored, "an unknown error has occurred (2001)"!! Guess it's stuck in that dreaded "iPhone Recovery Mode" loop. The question is, which way out??? How do I get it out of the recovery loop??

Mine keeps on saying that the device could not be restored, "an unknown error has occurred (2001)"!! Guess it's stuck in that dreaded "iPhone Recovery Mode" loop. The question is, which way out??? How do I get it out of the recovery loop??

A quick Google search for Error 2001 would indicate that this occurs when you have a jailbroken phone or were trying to downgrade iOS. Is that true for you?

HT201210 I am trying to restore software on my iPad which is connected to my PC with iTunes when i'm in recovery mode a warning comes up "The iPad could not be restored an unknown error occurred (1604) I have followed all suggestions but still my iPad is

I am trying to restore software on my iPad which is connected to my PC with iTunes when i'm in recovery mode a warning comes up
"The iPad could not be restored an unknown error occurred (1604) This i have discovered probably a USB timing problem ?
I have followed all suggestions but still my iPad screen is locked with a iTunes logo and a USB cable beneath it, wish I had never bothered
to update it now. Any help would be appreciated. rg

When I restart my iPad the connect to iTunes comes up and stays on until it shuts down again, I have read a report from Apple support suggesting I reinstall iTunes so I might try that again and also your suggestion which i shall also try, but thanks again - rg1547

HT201210 iphone could not be restored an unknown error occurred (1644)

iphone could not be restored an unknown error occurred (1644)

I highly doubt you are using Snowbreeze.
Error 2003
Connection problem; change USB cable and check USB port.

HT201210 iphone could not be restored An unknown error occurred(2003)

iphone could not be restored An unknown error occurred(2003)

I highly doubt you are using Snowbreeze.
Error 2003
Connection problem; change USB cable and check USB port.

HT201210 the iphone could not be restored. an unknown error occurred (1015).

the iphone could not be restored. an unknown error occurred (1015).

Error 1015: This error is typically caused by attempts to downgrade the iPhone, iPad, or iPod touch's software. This can occur when you attempt to restore using an older .ipsw file. Downgrading to a previous version is not supported. To resolve this issue, attempt to restore with the latest iPhone, iPad, or iPod touch software available from Apple. This error can also occur when an unauthorized modification of the iOS has occurred and you are now trying to restore to an authorized, default state.
http://support.apple.com/kb/TS3694#error1015.

HT201210 the iphone could not be restored an unknown error occurred

the iphone could not be restored an unknown error occurred

What error message number are you getting with your unknown error?

HT201210 i keep getting this message when trying to update my old 3g-"the iphone could not be restored-an unknown error occurred (-1)-any ideas? anyone?

i keep getting this message when trying to update my old 3g-"the iphone could not be restored-an unknown error occurred (-1)-any ideas? anyone?

i have done that
same result
the phone has a sim in it that is not active. does this cause the fault in question?

HT201210 the iPhone''iPhone''could not be restored.An unknown error occurred (1).

the iphone iphone could not be restored an unknown error occurred (1)

See these steps
http://support.apple.com/kb/TS3694#1

HT201210 hi,am trying to restore my ipod but i am getting this message each time:the ipod could not be restored-an unknown error occured,what should i do?

hi,am trying to restore my ipod but i am getting this message each time:the ipod could not be restored-an unknown error occured,what should i do?

Was the complete wording of the error message? Usually an error number or other information is also provided

HT201210 the iphone could not be restored.An unknown error occurred 21

the iphone could not be restored.An unknown error occurred 21
Please help me

Switch of your anti-virus and firewall then try again.

HT201210 I have updated my iphone 3 version 4.1.but in the middle of the updating time one message is coming.that is,(the iphone``iphone ``coundnot be restore and unknown error occured( 1015 )

I have updated my iphone 3 version 4.1.but in the middle of the updating time one message is coming.that is,(the iphone``iphone ``coundnot be restore and unknown error occured( 1015 )

Your phone is jailbroken. You can not get help here.

HT201210 restoring iphone4 unknown error 2001

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