iPhone iOS 4 Software Upgrade : iPod Touch iOS 4 Software Upgrade - Apple is expected to release the iOS 4.0 update via iTunes for iPhone and iPod Touch users. Make sure you have the new iTunes 9.2 for Mac and Windows installed to get the new iOS 4.0 update for your device. If not, then download the iTunes 9.2.


iOS 4 may be just a few hours old, but several developers are already rolling out versions of their iPhone and iPod Touch apps for the new OS. Most of the updates we've seen so far just ensure compatibility, or enable fast app switching. But a few, most notably Pandora, enable iOS 4's most wanted feature: multitasking.

To get iOS 4.0 on your device, ensure you've iTunes 9.2 installed. Then connect your device to the Mac or PC using dock connector cable while iTunes is still on. When iTunes identifies your device click on 'Check for Updates' button.