@easylag I have a similar issue. My Z axis moves only down. Now it won’t go back up and make a weird sound. I have printed several prints on this and …
@chumb360 What firmware did you load? I am having the same issues.
What is the new firmware you are trying to use? What Type of card? Is it a HC4?
What is the new firmware you are trying to use? Or are you just trying to turn on BLTouch?
@copymaster Then what? M92? Is this where you would put your number you got from extruding 100mm?