Sunlu T3 Firmware Update 'link' Jun 2026

: Sunlu provides firmware files on their official website or through their Official Facebook Support . Version v3.43 is a notable overseas release that supports both Chinese and English.

The screen runs its own independent processor. It requires a separate update. Sunlu T3 Firmware Update

Updating firmware on the Sunlu T3 can improve performance, fix factory bugs, and unlock features like increased hotend temperatures or optimized bed leveling. Official Version v3.40 (released Oct 2022) Firmware Type Marlin 2.0 Primary Method microSD Card (Auto-update on boot) Key Hardware STM32F103 MCU (32-bit) Preparation & Requirements Before beginning, ensure you have the following: MicroSD Card: Must be formatted to with a small allocation size (e.g., 4096 bytes). Firmware File: file named exactly firmware.bin for official/custom Marlin, or specifically configured for Official Downloads: Available via the Sunlu Support Page (v3.40 is the latest stable official release). Update Procedure (SD Card Method) Obtain the correct file for your specific machine version. Ensure the microSD card is clean and formatted to FAT32. Copy the file to the root of the SD card and rename it to firmware.bin Turn off the printer. Insert the SD card into the printer's slot. : Sunlu provides firmware files on their official

(or "Initialize EEPROM") to ensure no old settings interfere with the new firmware. Save Settings to confirm the reset. Important Notes USB Warning It requires a separate update

If you are using Arduino IDE: