Hello dear. I have an LK4Pro printer. I learned how to make plastic for printing from bottles. To print PET, I need to raise the temperature of the extruder to 270 degrees, but the printer at factory settings can only be 250. I wrote to the support service, and they gave me a link to the firmware for LK4Pro. But, after I changed the maximum temperature in the firmware, and installed it on the printer ... nothing changed on the main screen. As it was 250, 250 degrees remained. In Cura, I can set the temperature that I want for PET, but for change filament, I have to manually set 270 degrees. Question: maybe I need to change the maximum temperature in the screen firmware for this???