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    Ender 3 pro w/upgraded 4.2.7 & BLTouch - will not move on the z axis to home the z

    Ender 3 Pro, upgraded the MB to the 4.2.7 one (silent) and installed a BLtouch. tried several firmware versions from Creality, but nothing seems to work. The X and Y home fine, but then it moves to the center of the build plate and the probe extends and retracts 2x without even moving on the z axis. I did follow the wiring diagram, so I didn't screw that up. I swapped the control wires of the BLtouch, which did nothing. About to throw the damn thing away and just manually level the bed again.Does anyone have any ideas?
    Last edited by enderuser; 11-30-2020 at 01:46 PM.

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