u/Dull-Big9818

I was wondering if anyone could help me with making a firmware for a ender 3 pro with a probe and double axis as well as the pro nozzle. I had one for without the pro nozzle that worked fine and now I don’t know where it went and don’t know how to really make one. I’ve tried YouTube tutorials but they are split up and I don’t know what to do. If someone could help that would be amazing.