You can 1 click update CB and all your installed plugins (those provided by Joomlapolis) by using Install from Web within CB > Plugin Management > Install New Plugin.
You can also download a package with everything you need from our downloads page below.
www.joomlapolis.com/downloads
Then re-download that package except with latest versions using our download history page below.
www.joomlapolis.com/downloads/download-history