Updating the firmware on a is a straightforward process because the printer's board (an Ender 3 clone
Insert the Micro SD card into the printer's slot (contacts facing for the T3). the printer. Wait for Completion The screen will remain blank for approximately 10–20 seconds while the board installs the new software. Once finished, the main interface will load automatically. Post-Update Reset Navigate to Configuration Restore Defaults Sunlu T3 Firmware Update
Post-Update Reset: It is highly recommended to select "Restore Defaults" and then "Store Settings" (EEPROM) after flashing to ensure old settings do not conflict with the new firmware. Key Improvements in Updated/Custom Firmware Updating the firmware on a is a straightforward
Whether you are fixing a bug, adding safety features, or preparing to compile Marlin 2.1.x, the process outlined above will keep your T3 humming smoothly. Remember: Always back up your original settings, never interrupt the power during a flash, and when in doubt, consult the Sunlu community forums. Connect USB, run flashing command targeted at the MCU and
To update the firmware on your Sunlu T3 (the "Terminator"), you will typically use the microSD card method. Since the printer's board is a clone of the SKR E3 Mini V2, it is designed to recognize and flash a specific file name upon startup. Firmware Update Steps
Turn off the printer and remove the bottom panel (usually 4 screws). Look for the version printed on the circuit board:
(Terminator) 3D printer. The Sunlu T3 is equipped with a 32-bit motherboard, typically a modified version of the BigTreeTech SKR Mini E3 V2 Update Overview