How can you update cfp off-line?
You will need to download the installer of CIS. Get it from here: http://personalfirewall.comodo.com/download_firewall.html .
Thanks for your reply.
Will full install over the top preserve my settings?
You can maintain your settings by exporting them and importing them after the new install.
Go to Miscellaneous → Manage My Configuration → choose your active config → export --<> give it a proper name and save the file in a folder that is not part of the CIS installation folder; this is just to be sure it will not get erased in the uninstalling process.
It is not recommended though to import rules from v 3.8 or earlier. There were changes made in how rules get stored in 3.9 and up that will provide quicker storing of rules in the registry.
thanks for the info