There’s some really nasty prerequisites for doing this. Maybe I’ll write some tutorials of my own for those later, but, for now, we have to assume the following:
- You have a bootloader installed (so that firmware files can be updated via USB).
- Stock Ender 3’s with v1.x boards do NOT have a bootloader from the factory. You’ll have to install one. Google is your friend.
- Assuming you’ve got a bootloader installed, you’re likely somewhat adept at how the firmware update process works.
Assuming those are completed, its really quite simple: