How to install iPhone 3.0 OS on your iPhone
Apple has released the latest version of its iPhone operating system: version 3.0. It’s now available to download via iTunes. Assuming you have a legitimate (non jailbroken) iPhone, connect it via USB to iTunes, then click on “Check for Updates” (if it doesn’t automatically do so). You’ll get a series of screenshots as follows (Windows version will look slightly different): Click “Download and Install” to get straight on with the installation and update the iPhone:


