BarrelTimeTM -- Installing an Upgrade/Update
Whenever installing a new BarrelTime upgrade or update -- back up your data to a flash drive as insurance against the unlikely event of a massive computer failure. (You might be chewing the wrong flavor of gum when the lightning surge hits!)
Then, just run the BarrelTime installer in the same manner as a new install, directly over the current installation.
There is no need to do an un-install; you data is not touched by an upgrade/update installation.
When you do an upgrade/update, the installer will run as described in the Installing to the Computer topic.
Your existing Set Up defaults are kept as your Set Up defaults.