To upgrade Parallels Pro Control Panel installed from Virtuozzo Containers:
# vzpkg update template -f <template_package>
where <template_package>
is the rpm of the necessary Virtuozzo Container template
# vzpkg update metadata --remote <OS_template_name>
where <OS_template_name>
is the Operating System to which the template is installed (for example, redhat-el5-x86_64)
# vzpkg update <CT_ID> ppcpl10
where <CT_ID>
is the container ID