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This is very important information, I suspect that OMC-steppersonline changed the wiring with the new full D-cut version steppers.
The solution is not that complicated:

  1. first identify the coils wiring:
    there are two coils - two wires for each coil. here is a good way to identify the pairs of wires (Link - use method number 2)
    then, mark the pairs - they should be connected like this: pair 1 wire, pair 1 wire, pair 2 wire, pair 2 wire.
  2. start by connecting it with the default way of Duetwifi steppers wiring (attached pic: "Duet stepper")
  3. now follow this excellent guide under "Movement section" in this page (LInk)
    inside the config.g find this section, and edit it by the guide.
    ; Drives
    M569 P0 S0                                         ; Drive 0 goes backwards blv: its was S1
    M569 P1 S0                                         ; Drive 1 goes backwards blv: its was S1
    M569 P2 S1                                         ; Drive 2 goes forwards
    M569 P3 S1                                         ; Drive 3 goes backwards WAS 0

I added the correct homing direction (attached pic: "homing.jpg")
and axis direction (attached pic: "stepper direction.jpg")

Please keep me updated, since i want to fix the wiring diagram according to the new wiring layout.
I also ordered the new full D-cut version steppers from OMC for testing but with your help it will be way more fast to fix it.
Thank you !