(See the best response by DarkCampainger.)
Well, I've always wanted to create a command in the game which allowed me to update the server even if the Hoster was offline, I don't know how to do it, but I think it's possible, I've seen a lot of times LSX (Tens or w.e. his name is) updating his game Dragon Universe even if the hosters were offline.

And I'm not sure about this, but is it possible to copy the saves folder to your computer even though you're not the hoster? I know about import and export, but I have no idea of how to make it.

Please help me :( I'd really appreciate it, thank you :)
Best response
You can update a running world remotely by requesting the RSC and DMB files through an input(), using fcopy() to copy those files to the host's directory and replace the old ones, and then Reboot()ing the world.

To remotely copy savefiles from the host's machine, you can use flist() to get a list of files in your saves directory, and then ftp() them to yourself one at a time. If the host runs the game in trusted mode, you may be able to run a shell() command to zip up the saves directory and then just send that single zip file.