ITunes check for update error message

To solve that issue with iTunes, here are the steps that you should follow:

Disable the Firewall and Anti-Virus on your computer.

• There may be network timeouts on your computer and turning off the firewall and antivirus temporarily will help a lot in ceasing those timeouts. Just access the control panel on your computer and under systems security turn the firewall and antivirus off. Make sure that re-enable them once the update is complete.

Uninstall and then Re-install iTunes

If you are using windows operating system, then this will be a very method to use. Sometimes, just uninstalling iTunes and then later on re-installing its updated  version will resolve network connection errors perfectly.

Flush the DNS Cache

You will need to flush your DNS cache so that you can resolve the network time outs just in case you have a problem using the methods above.

Regards,

Carl

This question is very difficult to solution. Solution of this problem is follows.

If you are getting the error message "Unable to check for update" when you try an OTA (over the air update) there are two things to try:

1. Change DNS Servers

• Settings -> Wi-Fi
• Click the blue arrow on your connected network
• Delete everything in DNS and replace it with 8.8.8.8, 8.8.4.4
• Try again
• If this works, you will probably want to remove the WiFi network using "Forget This Network" and then reconnect to it to get your original DNS servers back. Alternatively, make a note of the original DNS servers before deleting them and replace it after you are done.

 If the above does not work then try the second option

2. Reset device

• Backup your iPhone/iPad to iCloud (very important).  Settings -> iCloud -> Storage and Backup -> Backup Now (at the bottom)
• Erase your device.  Settings -> General -> Reset -> Erase All Content And Settings
• Device will reset and wipe itself
• When it restarts follow the instructions on screen and setup your device. You're choices here do not really matter except for restoring from a backup.  Do not restore a backup, choose "Set up as new".
• When complete, the Software Update should now work which will install IOS 5.1
• When installed, Erase the device again. (See Step 2)
• Once erased, follow the wizard but this time select that you wish to restore from a backup in iCloud.  Select the backup that you took in step 1.
• Your device should be back to normal and with IOS 5.1.

 These are the two known fixes at the moment.  I hope this helps.