Download your chosen .bin file. Rename it to something short and unique, like update123.bin . The printer will not flash a file with the same name as the previous one.
Your hotend and bed heating behavior will change. Run a PID tune to ensure stable temperatures.
A firmware update is only "better" if you calibrate the machine afterward. Because the new firmware likely has different default values, you must perform these three steps: sunlu t3 firmware update better
The Sunlu T3 uses a 32-bit motherboard, making the update process relatively straightforward via the microSD card slot.
Sunlu occasionally releases stability patches. These are the safest route but often lack the advanced features found in the community versions. Use these if you want the factory experience with fewer bugs. 2. Marlin (Community Builds) Download your chosen
Before you flash a new file, you need to decide which "flavor" of firmware will make your T3 better for your specific workflow. 1. Official Sunlu Updates
Are you currently using the or a touchscreen upgrade ? Do you have a Raspberry Pi or BigTreeTech host for Klipper? Your hotend and bed heating behavior will change
Provides sharper corners and more consistent extrusion.
Insert the card into the powered-off printer. Turn the printer on. The screen may stay blank for 10–30 seconds— do not turn it off.