M404 - Changing Filament Diameter (2 replies)

Hi!

I have a very simple question, about filament diameter.

It´s strange why is needed two places, in configuration.h and in Slicer, but ok! I think!

Now I want change the filament diameter, I need to upload the firmware each time?
When I try use the command M404 the answer is: Unknown command!!?? How to enable it?

Any question or any sugestion are welcome!

ASousa