Hello everyone, first time writing in here. And i am a complete noob in linux

Our web admin lost in his working days and our TS3 server needs update, It says so when i connect to it

We are running it on a Linux server hired from miniserver.com. Not hired the TS server. Our web page runs on it also.

I need to learn how to update or reinstall which ever is easier. to upgrade the TS server using cpanel.

Thanks in advance and pls dont be harsh on a linux noob.