Navigate to and unzip the ZIP file that you created that contains all of the files for your extension.
Modify the install.xml file and any other files that you want to update.
Create a ZIP file with the updated files.
The name of this file must be the same name as your original extension.
Deploy your extension, as described in Adding Software Extensions to Your Vibe Site
in the Novell Vibe 3.4 Administration Guide.
Vibe automatically updates your extension files with the latest files from your newly deployed extension.