Published by: 3D Printing Tech Desk
Reading time: 8 minutes
If you own a Two Trees Sapphire Pro, you know it is a formidable CoreXY 3D printer capable of outstanding print quality. However, like all advanced 3D printers, its brain—the firmware—needs periodic maintenance. Whether you are chasing better thermal management, quieter stepper motors, or fixing a persistent bug, learning the correct Two Trees Sapphire Pro firmware upd process is essential.
This guide covers everything: from identifying your current board version to compiling Marlin 2.1.x, performing the flash, and common troubleshooting.
If you want to update the existing firmware, here is the general path most users take: two trees sapphire pro firmware upd
This updates the UV LCD controller for exposure timing and light uniformity.
For most Two Trees Sapphire Pro units with the TT 32-bit board, the manufacturer designed an SD card bootloader. This is the recommended upd method.
Q: Can I update the firmware via USB / Pronterface?
A: Not directly – the MKS Robin Nano requires an SD card for bootloader flashing. However, you can send M997 over USB if a bootloader already exists, but the SD method is more reliable. Published by: 3D Printing Tech Desk Reading time:
Q: Will updating firmware reset my EEPROM settings?
A: Yes. Always save your E-steps, PID, and mesh data before updating. Restore them using M92, M301, etc., after the update.
Q: Does the Two Trees Sapphire Pro support Klipper?
A: Absolutely. Many users abandon Marlin and flash Klipper. The firmware upd process for Klipper requires a different setup (Raspberry Pi + Flashing via SD card with Klipper’s .bin file). This is a separate guide but uses the same firmware.cur method.
Q: My printer's original firmware is very old (2021). Can I directly upgrade to the newest?
A: Yes, but you must compile for your specific board. The config structure changed in Marlin 2.0.9+, so compare your old Configuration.h settings (like bed size, probe offsets) with the new template. If you want to update the existing firmware,
Avoid random forum links. Start here:
Never flash a file named
unknown.binobtained from a random Google Drive link. Malicious firmware can damage your stepper drivers.
Cause: Serial port incorrect or baud rate mismatch.
Fix: In Configuration.h, set #define SERIAL_PORT 2 and #define BAUDRATE 115200 or 250000.