Custom firmware fixes issues where the extruder cooling fan only turns on when motors move, preventing heat creep.
Easily push past 200mm/s without the motherboard stuttering.
Custom firmware allows for better mesh leveling (e.g., 5×5 grids), resulting in a more accurate first layer.
After updating, your printer’s brain has changed, but its memory (EEPROM) needs to be updated too. sunlu t3 firmware
Independent reviews and community feedback suggest several areas where the stock firmware underperforms: SUNLU T3 3D Printer Settings - Anson Liu
Make sure your SD card is formatted to FAT32. Ensure the file name ends strictly in .bin . If you are reflashing the same firmware version, rename the file slightly (e.g., firmware_v2.bin ), as many motherboards will not flash a file with the exact same name as the previously installed firmware. 2. Auto-Bed Leveling Probe Fails or Crashes into the Bed
Custom menus to tune hotend and bed temperatures more efficiently. Custom firmware fixes issues where the extruder cooling
// In Configuration.h #define MOTHERBOARD BOARD_CREALITY_V427 // Or V422 #define SERIAL_PORT 2 #define BAUDRATE 115200
Connect your host computer to the Sunlu T3 via a high-quality USB cable. In your web browser interface, open the configuration files and map out your stepper pins, endstops, thermistors, and BLTouch pins.
Predicts filament oozing to ensure razor-sharp corners and incredibly clean retractions. After updating, your printer’s brain has changed, but
The Sunlu bootloader will not flash a file with the exact same name as the currently installed firmware. Rename the file to something unique, such as update2026.bin . Flash the Printer: Turn off the Sunlu T3. Insert the micro SD card into the printer's card slot. Turn on the printer.
Ensure you are using a firmware version that specifically addresses the extruder fan mapping (such as Kaot93's version).
Activate advanced thermal runaway protection to prevent fire hazards if a thermistor fails.
Ensures the printer shuts down safely if a temperature sensor fails, preventing potential fire hazards.