Releases · dderg/Marlin-Neptune-3-Pro

Paste the file to SD card, rename to ZNP_ROBIN_NANO.bin, insert into the printer and restart it.

You might need to update the screen too, I haven't tested it on version 1.4, you can find 1.5 here

I noticed that Linear Advance values needed to be recalibrated, since the values I was using before were too high now

Only tested this on Neptune 3 Pro, but Plus and Max should work too, make sure to pick the correct firmware.

Use at your own risk, I only tested this on my own printer

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