Ok so for information to follow this issue Ikea blinds Fyrtur and Kadrilj cannot be added · Issue #6486 · dresden-elektronik/deconz-rest-plugin · GitHub
The DDF for KADRILJ have the status Bronze, so need to set it to “Gold”
And the DDF for Fyrtur is here Add DDF for Ikea Fyrtur roller blind by SwoopX · Pull Request #6110 · dresden-elektronik/deconz-rest-plugin · GitHub
And yes, no need the GUI to install them, can just use test editor DDF cheat sheet · dresden-elektronik/deconz-rest-plugin Wiki · GitHub