CP+ is updraded directly from Web interface:
Log in to CP+ as admin.
Click the Server Management tab in the upper menu:
On the page that appears, click the CP+ Configuration icon.
In the CP+ Configuration page, click the Upgrade CP+ icon to
proceed to the Upgrade CP+ form:
You may download a CP+ package to your local box
by clicking the Download latest version on
CP+ home page,
and then upgrade CP+ from that package saved locally.
Or, you may choose the Latest version from cpplus.psoft.net option
in the form and upgrade directly from CP+ site.
Click the Upgrade CP+ button to start upgrading. You will see the
upgrade script messages running in the CP+ working area:
After the upgrade is completed, you will see the updated version
under the System Information section at the left menu.