Updating the firmware on your can unlock enhanced features like better temperature stability, improved "Fast Print" acceleration, and even bug fixes for SD card printing. Since the T3 uses a modified BTT SKR Mini E3 V2 Go to product viewer dialog for this item.
Fixing Component Errors: Some users have found that updates help with probe self-test failures.
The official firmware is designed for a "set and forget" experience. However, community feedback on specific versions is mixed:
Step-by-step: Building and flashing Marlin for Sunlu T3
- Clone Marlin repository (stable release).
- Locate or create Configuration.h and Configuration_adv.h tailored to your board and hardware:
Mitigations: Backup current firmware (if possible), document original settings, and proceed with conservative changes and incremental testing.
motherboard, it is essentially a high-speed Ender 3 clone that runs on Marlin 2.0. Preparation Checklist
Improved Input Shaper Tuning: Reduces ghosting and ringing at high speeds.
Enhanced Leveling: Stock firmware sometimes struggles with creating accurate bed meshes. Custom versions like Kaot93’s Marlin 2.1.2 increase leveling points to a 5x5 grid, providing much better first-layer adhesion.
Backup Settings: Record your current E-steps and Z-offset values.