Are you looking to install content for Kolibri? I think best way to install Kolibri content is through Kolibri itself. There are instructions for installing Kolibri channels in this readme file under “installing Kolibri Channels”. The only difference is the port may be 8080 instead of 9090 if you’ve installed Kolibri another way.
I’m not sure if the FTP will be updated or if my images will be put there. I do have a new image coming soon that has a lot of new features and bug fixes that will be posted here.
If you’re debating whether to use a server or installing content directly to devices, in my opinion using a server is much easier to maintain for multiple devices and using RACHEL is a bit easier than Kolibri, which can be confusing to get used to.