I own the Ender 3 Pro BUT,
I have the silent motherboard 32-bit and installed with the firmware: "Ender-3 Pro_HW4.2.7_SW2.0.9.03_SpritExt_H300" because it seems like its the only one meant for the extruder pro kit. It complains that the BL-Touch is not attach to it. I can see it in Octoprint error message and gcode terminal.
With the default firmware on it, it did manage to start the print till its heated to 228°C, but Octoprint couldn't proceed after the printer heated. It just waited till infinity.
Additionally the Display is not working at all, its beeping and mid beeping a louder beep is repeating every second. Not sure why, but the display claims to support Ender 3 Pro, Ender 3 and Ender 3 v2.
More Sources:
What firmware would be the correct one for the extruder? Should I return the Display?
Silent Mainboard did work with the stock-extruder. It stopped working with Octoprint after replacing the extruder with the new one, but seems to heat and move correctly.
This seemed to work with PID tune. It was confusing at first to compile bit seems easy now.
The screen was needed to be selected. But I just send it back for being too glitchy and restrictive.
Glad it worked out for you. Good luck and happy printing. Send me a message if you need help with the firmware. Cheers.