Two Trees Sapphire Pro Firmware Best ((install))

Ensure the firmware is set to standalone or UART mode depending on your board revision.

Any change to the configuration requires editing code in VS Code and reflashing the board via SD card.

Out of the box, the Sapphire Pro runs a basic version of Marlin. While functional, it suffers from:

Always take a picture of your current firmware settings before flashing to ensure you can revert or re-configure, and never flash firmware without having a proper .bin file confirmed for the MKS Robin Nano board

Use a small (preferably 8GB or smaller) MicroSD card formatted to FAT32.

Two Trees eventually listened to the community. In late 2023, they released an updated official firmware (v2.0.x) that fixed thermal runaway and added a 5x5 mesh leveling.

The Sapphire Pro features a BMG-clone dual-gear extruder. This extruder requires a much higher step count than standard single-gear extruders.