Translations:KAVAN V20 + ETHOS™ - User manual/216/en
From KAVAN RC Wiki
Tap Set current model to set the highlighted model as the current model.
You can clone the model to duplicate the model. Note that when you clone a model, ETHOS assigns a new receiver number to the clone. If you give it the old receiver number, it will work, no need to rebind it.
Change the model folder.
Alternatively, you can delete the model. Note that the Delete option only appears if the selected model is not the current model.