I have trouble when try to install application to my iPhone. It says "The Developer Disk Image could not be mounted. XCode could not find an appropriate Disk Image to mount on amiranto. Please contact Apple for the 2.2.1 [5H11] device support package". Any solution would appreciated...

regards,
amiranto

Make sure you have installed the right SDK for the OS. If you happen to be using a certain beta OS then you also need to install a certain beta SDK. And vice versa.