going from printer back to CNC?

I took my complete (V1) MPCNC and turned it into a printer. Now I want to go back to a CNC but I have forgotten if I need to do any firmware changes. Currently I get a heater and bed error message on my LCD. Do I need to reflash my boards?

Thanks in advance,


Easiest way is just reflash, but if you have one a resistor across the T0 pins can fake a proper reading as well.