I just upgraded the firmware and Carbide Motion, had the same thing happen. In fact the red EMERGENCY button fell off because I had to whack it so the machine wouldn’t tear itself apart (replacement??), but I did stumble into the solution for fixing the smashing into the right side, as if the limit switch wasn’t working.
Power down the Nomad. Quit Carbide Motion. Power up the Nomad. Launch Carbide Motion. Do the Connect in Carbide Motion. DO NOT Jog or try to Home. Instead go to SETTINGS in Carbide Motion.
I’m not sure exactly what I did but I set a few things to whatever made sense, and completed that process.
I think that doing the firmware update erased machine characteristics in the Nomad’s controller, and by going through the Settings process they got put back. As soon as I did that, Homing worked just fine. Machine now works.
Now, where do I get a replacement Emergency button??? (I have read that only the original Nomads have/had them.)