Installing iOS on Your Development Device
Select the device you want to update from the Devices organizer.
Select an iOS version from the Software Version pop-up menu.
Click the Restore button, and confirm you want to install the software.
When installation is complete, activate the device and restore its contents using iTunes.
Back in Xcode, click “Use for Development” in the Devices organizer to reenable development for the device.
Install a new version of iOS when you want to upgrade a device for development.
You may need to install iOS on your development device to run your app on a beta or GM version of the iOS software.
The Software Version pop-up menu displays the versions of iOS that are available for you to install. If the version you want is not listed, you must add it to this menu before you can install it. To add the new software version to the menu, select Other Version and navigate to the software image on your computer. Xcode then adds the version to the pop-up menu and makes it available for installation.
When you enable a device for development, Xcode installs any provisioning profiles and development-related data associated with the device. Xcode asks you for your developer program credentials and provisions any new devices automatically before making them available for development.
© 2012 Apple Inc. All Rights Reserved. (Last updated: 2012-06-11)