Z axis motor alarm after doing a manual update

I am having an issue with my z motor alarming after doing the resolution upgrade. I changed the z motor back to 400 resolution. And my spindle dropped a little and alarmed. I have a braking stepper motor on my z axis. Does anyone have any ideas or suggestions?

Similar issue and suggested resolution path here:

1 Like

Check your tool data. Mine was erased and I had to reload.