How can I update my Droid on CRiCKET 2.0.1 to 2.2
Just flash a new ROM to your phone... You can find them on here, or on ROM Manager.
If you have a Moto Droid, and the build.prop is set to say 2.2 FRG22D then you can just edit that with Root Explorer...
Sorry this wasn't the most informal post. There posts that contain things you are looking for.