Sunlu T3 Firmware Update Jun 2026
If your firmware update does not go smoothly, use these troubleshooting steps to resolve the problem. The Screen Stays Blank Permanently
: If the official version doesn't meet your needs, there are community-maintained Marlin configurations on GitHub and Printables that enable features like improved 5x5 bed leveling.
: Available on Printables , this build improves bed tramming and filament runout detection.
The T3 uses a touch screen (TFT) or a knob-style LCD depending on the batch.
: Some custom firmware builds (like the popular Kaot93 version) may disable USB functionality. Check the specific file of your chosen firmware before flashing. : After updating, you will likely need to re-calibrate your and run an Auto Bed Leveling (ABL) sequence, as these values are often wiped during the reset. Printables.com specific firmware version for a feature like BL-Touch or high-speed printing? Custom Firmware for SUNLU T3 by Kaot93 - Printables.com Sunlu T3 Firmware Update
Exit and save, then run make to compile the klipper.bin file.
If you can share the exact filename of the firmware you downloaded, I can help verify it. Share public link
The Ultimate Guide to the Sunlu T3 Firmware Update The Sunlu T3 has earned a solid reputation as a budget-friendly, high-speed FDM 3D printer. However, out-of-the-box stock firmware often limits its true hardware capabilities. Updating your Sunlu T3 firmware can unlock faster printing speeds, improve thermal safety, and deliver cleaner print quality. Why You Should Update Your Sunlu T3 Firmware
The Sunlu T3 runs on , the popular open‑source firmware used in countless 3D printers. While the stock firmware works well out of the box, updates often fix bugs, improve reliability, and sometimes unlock better performance. Key features of the T3’s firmware include: If your firmware update does not go smoothly,
exactly. If you have updated before, ensure the name is different from the previous update (e.g., firmware_v2.bin ) as the board may ignore a filename it has already "seen". Copy to SD Card file in the root directory (not inside any folders) of your formatted Micro SD card. Flash the Printer the printer. Unplug any USB cables connected to the printer.
If downloading a pre-compiled binary, ensure it matches your specific mainboard and driver configuration (e.g., TMC2209 drivers). If compiling your own: Download the latest Marlin bugfix branch. Download the Marlin Configurations repository.
When you turn on the power, the bootloader will automatically detect the firmware.bin file on the card and begin the update. The LCD screen will stay blank or show a firmware‑update message for a short while.
Which or chip is currently inside your T3? The T3 uses a touch screen (TFT) or
: Newer firmware better handles the "Fast Print" mode, which targets speeds up to 250mm/s . Step-by-Step Update Procedure uses a modified BTT SKR Mini E3 V2 Go to product viewer dialog for this item.
of your original firmware files if possible, as official downloads can sometimes be hard to locate.
Carefully tilt or flip the printer to access the bottom electronics enclosure. Remove the screws securing the metal cover.
Updating to the latest version (such as or newer) can help resolve bugs in related features like jam detection and power loss recovery. Custom Firmware for SUNLU T3 by Kaot93 - Printables.com