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Old 11-13-2009, 16:57   #3 (permalink)
mobi786
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When you are trying to update or restore your iPhone or iPod touch with iTunes, you may see an alert message in iTunes that stops the update or restore process. You may also see the "Connect to iTunes" screen on your iPhone or iPod touch:

The alert message in iTunes may also include one of the following numbers (but is not limited to): 2, 4, 5, 6, 9, 13, 14, -18, 19, 20, 21, 23, 28, -48, -50, 1002, 1011, 1013, 1015, 1601, 1602, 1603, 1604, 1608, 1609, 1611, 1612, 1639, 2009, 3004, 3013, 3014, 3015, 9807, -9808, 9844.

You can sort this problem out with this some simple and usefull steps
Update to the latest version of iTunes

To see if you have the latest version of iTunes, open iTunes and check for updates.

* Windows: Choose Help > Check for Updates
* Mac: Choose iTunes > Check for Updates

If there is an update to iTunes available, install the update and try to restore again. If you do not have an active connection to the Internet, or your Internet security settings are configured to prevent iTunes from communicating with Apple, iTunes will alert you that the iTunes update server could not be contacted. Resolve your Internet issues and attempt to update again. If you are using Windows, see iTunes for Windows: iTunes cannot contact the iPod or iPhone software update server.
Restart your computer

Simply restarting the computer can clear up certain issues that could prevent you from restoring iPhone or iPod touch. After you restart, try restoring the device again in iTunes.
Open the proper ports and allow access to Apple servers

During the update and restore process, iTunes needs to contact Apple. Ensure that your computer has the following ports open and can access these servers:

* port 80
* port 443
* phobos.apple.com, albert.apple.com, gs.apple.com

If you experience "Error 9807", you must open access to the following VeriSign servers:

* evintl-ocsp.verisign.com
* evsecure-ocsp.verisign.com

You may need to update, properly configure, disable, or uninstall built-in firewalls and other security software to prevent interference with iTunes. For assistance with this, contact the company that supports the security software you use. If you are using proxy settings, try to restore or update without using a proxy.
USB Troubleshooting

Connect iPhone or iPod touch to a different USB port on your Mac or Windows PC. USB 2.0 ports that are built-in to the computer are preferred over a hub. If you tried connecting iPhone or iPod touch to USB ports on the front of the computer, try connecting them to rear USB ports. After doing this, try to restore the device in iTunes.
If the issue continues:

1. Remove all USB devices except the keyboard, mouse, and iPhone or iPod touch. Remove all USB hubs and connect directly to the computer.
2. Connect iPhone or iPod touch directly to the included USB cable, bypassing the dock.
3. Restart the computer.
4. Try to restore the device again in iTunes.
5. If available, test with alternative, known-good USB cables.

See Troubleshooting USB connections for additional tips related to USB connections and try to restore again after following those steps.

If the issue persists and you are using a Mac, try resetting the USB connection by following the steps in What to do if your computer won't recognize a FireWire or USB device, and then try restoring the device again.

If the issue persists and you are using virtualization software to run another operating system alongside Mac OS X, quit that software; it may create virtual USB ports that may be causing the issue. Or you can try to control or restrict access to USB ports while running the virtualization software.
Restore on a different computer
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