Is there a list of supported / tested devices ? I have a board with Nationstech N32G455 what is Cortex M4 generic flash controller.
If not tested, are there any recommendations of other closest devices to try ?

nationstech.com/en/N32G455MCUs/

Perfect thanks. As Nationstech does not show up in my target setup menue, I probably have to try again after Ozone version update