Slower than Klipper; requires manual recompilation for every configuration change. 3. The "Easy" Upgrade: Foxies (MKS Robin Nano)

Upgrading the firmware is the single most impactful "mod" you can perform on the Sapphire Pro. It transforms a jittery, mediocre machine into a high-speed precision tool.

The Sapphire Pro usually uses a BMG-style extruder clone. Your E-steps should typically be around 400-415 , but always calibrate this manually.

For those who want a "flash and go" experience, the firmware builds by on GitHub have long been a favorite for Sapphire Pro owners.

The is a bit of a cult classic in the 3D printing community. With its CoreXY motion system and linear rails, it has incredible hardware potential, but the stock firmware is notoriously its weakest link.

if you want to push the printer to its physical limits and don't mind spending $35 on a Pi.