The more sophisticated application you have, the more problems you get. It is absolutely true. However, iTunes help can be a useful source for you to get the best solution for your problem.
iTunes help 1: iTunes cannot recognize devices such as iPod, iPhone and the iPad
Mac user sometimes encounter situations where the device is an iPod, iPad, and the iPhone connected to a Mac is not detected by iTunes. I myself experienced this problem a few days ago when I moved from the iMac to the MacBook. iPhone cannot be recognized by iTunes on the MacBook, even though everything is correct, I even move the iMac to the MacBook iTunes library. The main problem that is often found is the “driver” for this iDevices crashed. To solve it, is essentially a bit easy way, which is called to reconnect iTunes. But at some point this procedure is not easy, so that the required extra steps to uninstall the “driver” beforehand.
Make sure your account has Administrator rights. Through Terminal.app, type:
sudo rm-rf / Data / Doc / Control / AppleMobileItem.kext
This step is not important if you are using Mac OS X Snow Leopard (10.6)
sudo rm-rf / Data / Doc / Process / AppleMobileItemSupport.pkg
And, reinstall iTunes. The problem is over. But in some cases in Snow Leopard, the problem is resolved after the installation of iTunes, but the problem will re-appear after you restart. If you experience these cases, then proceed to the next steps. After restarting, open again Terminal.app and input:
sudo rm-rf / System / Library / LaunchDaemons / com.apple.usbmuxd.plist ~ orig
And restart. Test again to link the iDevices.
If the problem still not resolved, continue to the next step.
Turn off iTunes, unplug iDevices. Open Terminal.app, type:
sudo rm-rf / Processing / Doc / ReleaseDaemons / device.apple.usbmuxd.plism ~ orig
sudo rm-rf / Processing / Doc / Files / AppleMobileItem.kext
sudo rm-rf/ Processing/ Doc/ PrivateFiles/ MobileItem.framework
Restart. Do not connect the first iDevices. Perform installation of iTunes. After that, iTunes and iDevices relations should be re-tender. iTunes help you solve this problem.
iTunes help 2: How to Make iTunes Wi-Fi Sync with IOS 5
Users of IOS have expected for this one item, bring into line through Wi-Fi. You are no longer dependent on the similar USB wire that results in error. Here are the steps to turn on Wi-Fi Sync in the middle of iTunes with devices already installed IOS 5. Make sure you are using iTunes 10.5 and your device has been upgraded to IOS 5. Run iTunes and plug your device, this step need only to be done once. Then select the device, in the Summary section, just scroll down. Turn on the “Sync with this iPad / iPhone upon Wi-Fi”. Get on the Apply control; hang around until the process transferring and copying is finished. Switch off iTunes, and resume your gadget. Your devices will continue to appear in the iTunes sidebar. Now the synchronization can be directly through the air, bye-bye cable!
You can sync by pressing the Sync button in iTunes, or by going to Settings.app> General> iTunes Wi-Fi Sync.
iTunes help 3: iTunes will not open or unexpectedly quits
Cause: spoiled partiality files or probably outdated connection.
Solution: delete partiality and Third-Party application. Remove the following folders:
C:\Doc and Controls\Your ID Here\App Information\Apple Device\iTunes
C:\Doc and Controls\Your ID Here\Local Control\App Information\Apple device\iTunes
C:\Doc and Controls\All Users\App Information\Apple Device\iTunes\SC Data
iTunes help 4: Error messages, as follows:
“iTunes cannot run because it detects a problem with QuickTime”
“iTunes cannot run because it has detected a problem with your audio configuration”
“Error (-200)”
Cause: Apple doesn’t provide a cause for this issue, but it appears to have something to do with QuickTime Player’s audio preferences.
Solution: Reinstall QuickTime
Click Control Panel from the Start Menu then select Add or Remove Programs.
Select QuickTime from the list then click the Remove button to start the uninstall process.
So, what are you waiting for? Just follow the instruction and iTunes help will guide you to make your gadget fixed.