I tried to update according to https://z-wave.me/z-way-v3-0-0/
and after that I got the error: Error 500: Internal Server Error
CGI program sent malformed or too big (>16384 bytes) HTTP headers:  when trying to update from my current version 2.3.8.
I updated from Jessie to Buster according to the instructions.
Did my update to Buster fail? Do I need to format my sdcard and do a clean install of buster and then install the latest z.wave.me?
Edit: Sorry, forget what I wrote above! I only updated to Buster according to the home page but I did not do the actual update to version 3.0.0.
I will try that tomorrow and see how it goes. I actually think the update to Buster failed though, there were some error messages along the way...