Ok. It worked using debian. The lesson is, don't use the built in windows 10 ftp client.

@elmado I'm using windows 10 ftp, which apparently behaves differently. I guess I need to try it from a linux system when I get time. I changed to both private and pub directories, the private...

@R1D2 It says the file doesn't exist. 220 ftp.rent-a-guru.de FTP server ready. 501 OPTS: UTF8 not understood User (ftp.rent-a-guru.de:(none)): ftp 331 Anonymous login ok, send your complete email...

@R1D2 Hi there, Is this package still on ftp.rent-a-guru.de? If so, what is the exact package name as it won't let me do a listing (Unable to build data connection: Connection refused). THanks, chili

Yes, I did finally get it working on a Debian 9 system. It's actually a LXC running inside a Proxmox system, which is purpose-built to only run the Omada controller. And to your point it's much more...

@R1D2 Thank you. I did have to use "update-alternatives --config java" to switch from version 11, which was apparently installed on my system. Also, I didn't mean to say windows was all that great,...