I’m having this same issue. I just updated firmware and now running the v1 custom 515D 2.1.1… Even after flash, Z moves but Z2 does not. I’ve put the Z2 motor on Z1 to check wiring and it worked. Also swapped the motor controller and it also worked. Guess is it’s firmware serial related. Purchased the board pre flashed from v1 last year and just finding time to finish this beast. I’m almost there.
Process I used to flash was just copy bin to SD card and insert into skr pro v1. 2 and reboot. Did I do something wrong? Thanks in advance.
You have the wrong firmware installed. You have installed the firmware used for the Primo. You want V1CNC_SkrPro_DualLR_2209. Note the ‘LR’ in the label.