Are your current SSL certificates expired or expiring soon? Need to install new ones, possibly without running the full VSys Live installer? You can manually update those certificate files in place.
In most cases you're better off using the VSys Live installer for this.
Assumes a Windows - not Linux - installation of VSys Live.
In the folder
c:\VSysLive\MAIN\certs, you'll usually find three files:
(where "MAIN" may be different for your site.)
To update the certificate files,
.keyfiles you got from your SSL certificate vendor to be named
MAIN.key, replacing "MAIN" with the names you find on the existing files. (You usually don't need to update the intermediate -
Repeat all of the steps above for any other VSys Live sites whose SSL certs need updating.
Always put the new SSL certificates into VSys Live installation settings: if you don't, then the next time you run the installer you'll install the old certificates and not the new ones.