Refined algorithms improve the auto-bed leveling system for a more precise first layer. Preparation and Prerequisites
Use a high-quality card (8GB to 32GB). Large capacity cards (64GB+) often fail to read during boot flashing. MicroSD Card Reader: To connect the card to your computer. The Sunlu T3 Printer: Fully powered off until instructed. 2. Software & Files
A: No. The Sunlu T3 uses a unified firmware file that updates both the mainboard and the LCD controller in one operation.
The bootloader did not read the file correctly, or the firmware crashed upon initialization. Sunlu T3 Firmware Update
Turn off the printer, , and remove the DWIN_SET folder from the card before turning it back on. Troubleshooting Common Issues
Updates often include tweaks to thermal protection protocols. Prerequisites: What You Need Before updating, gather the necessary tools: Sunlu T3 Printer
Calibrate your extruder steps to ensure that when your printer asks for 100mm of filament, it pulls exactly 100mm. Refined algorithms improve the auto-bed leveling system for
Copy the Sunlu T3 configuration files (if available) into your Marlin folder, or configure the Configuration.h and Configuration_adv.h files manually based on the T3's build volume (220x220x250mm), bowden extruder steps, and sensor pins.
Power on the printer. The screen will remain blank for 10 to 30 seconds while the bootloader installs the new software.
The Sunlu T3 uses a 32-bit mainboard, meaning firmware updates are incredibly straightforward and run directly from the MicroSD card. Step 1: Format the SD Card MicroSD Card Reader: To connect the card to your computer
Use a high-quality card, ideally 8GB or 16GB. Large capacity cards (64GB+) often fail to read during firmware flashes. SD Card Reader: To connect the card to your computer. A Computer: Windows, Mac, or Linux with internet access. 2. Format the MicroSD Card
Updating the firmware on your Sunlu T3 is a rewarding and low-risk procedure that keeps your printer at peak performance. By following the steps in this guide—preparing your microSD card, downloading the latest .bin file, and performing the flash—you can benefit from the latest bug fixes and optimizations that Sunlu provides.