Machine moving during tool change

[RussellCrawford]

Direction on how to lock stepper motors for tool change

I have been using my X-Carve, for a little more than a year. It use to lock for tool changes, but I had a problem and had to replace my control boards. Now I can not lock the stepper motors during tool change. I understand I can change GRBL to $1=255. My question is, do I go to Machine in Easel, then advance, and that’s where I am not sure where from there. I have never made any changes on my machine and don’t want to mess it up. I also use V-Carve and Aspire for most of my work if that matters…