The official firmware usually comes as a .bin file named something like T3_V1.0.4.bin . It is a compiled version of Marlin 2.0.x. Installation is standard:
If an axis moves backward after an upgrade, look for #define INVERT_X_DIR (or Y/Z) in Marlin's Configuration.h and toggle it from true to false (or vice versa). If you are ready to optimize your machine, let me know: Which motherboard version is currently inside your T3? sunlu t3 firmware
The SUNLU T3 uses a custom mainboard. If you are upgrading to a different probe (like a CR Touch or BLTouch ), ensure your firmware configuration matches the specific sensor pins on your board to avoid leveling errors. The official firmware usually comes as a
If your printer is glitching or you simply want to restore it to factory defaults, downloading the official firmware from Sunlu is the safest route. How to Flash Official Firmware Visit the official Sunlu website's download section. If you are ready to optimize your machine,
The stock firmware is a specialized version of . Its standout feature is the "Fast Print" mode , an algorithm that optimizes acceleration and speed values directly from the printer's interface to cut printing times by up to 50%. Core Features:
Recompile firmware with FILAMENT_MOTION_SENSOR enabled, or if using Klipper, define the pin under a [filament_motion_sensor] block rather than a standard [filament_switch_sensor] .