Sunlu T3 Firmware Update Updated

There are two main hardware versions of the Sunlu T3.

A: No. The Sunlu T3 uses a unified firmware file that updates both the mainboard and the LCD controller in one operation.

The update might reset your leveling data.

using a modified SKR Mini E3 V2) supports flashing directly via the Micro SD card slot. Preparation Requirements Micro SD Card : Use a blank card (8GB or smaller is recommended). : The card be formatted to with an MBR partition map. Firmware File : A compiled file. You can find official versions on the Sunlu Website or custom Marlin builds from community members like Kaot93 on Printables Step-by-Step Update Guide Prepare the Firmware File Download your chosen firmware file. Rename the file to firmware.bin

The Ultimate Guide to the Sunlu T3 Firmware Update: Unlock True High-Speed 3D Printing Sunlu T3 Firmware Update

While modern Sunlu boards include thermal protection, custom firmware ensures these lifesaving safety protocols are up-to-date and highly responsive.

Copy the downloaded .bin file directly to the root directory of your formatted SD card. Do not put it inside any folders.

This report outlines the procedures, benefits, and risks associated with updating the firmware on the

The most important calibration is the . Your previous leveling data is almost certainly gone. It is strongly recommended to perform a full manual bed tramming and set a new Z-offset to ensure proper first-layer adhesion. The ABL (Auto Bed Leveling) system will also need to be re-initialized to perform its 16-point mesh leveling, a process that takes about 60 seconds. There are two main hardware versions of the Sunlu T3

You will need three main things:

The printer bootloader only looks for new files. If it detects a file name it has seen before, it skips it. Rename the .bin file. Also, verify that your SD card is under 16GB and properly formatted to FAT32. Moving Beyond Marlin: Consider Klipper Firmware

Sunlu occasionally changes internal components across manufacturing batches. Unplug your printer from the wall. Gently tip the printer to access the bottom panel. Unscrew the electronics enclosure cover.

Do you have a (like adding a new probe or changing the extruder) you are trying to address? Share public link The update might reset your leveling data

The mainboard bootloader is highly specific about how it reads update files. Insert the MicroSD card into your computer. Right-click the drive and select .

Look at the printed text on the mainboard. You are looking for the version number (e.g., a custom Sunlu board or a Makerbase/MKS derivative) and, crucially, the main chip microcontroller (typically an or GD32 chip).

Incorrect pin assignment or inverted logic for the Z-homing probe.

If the official download page is temporarily unavailable , check community forums; many users mirror the files. Always verify the file’s integrity when possible (e.g., by comparing MD5 hashes) to avoid corrupted or malicious firmware.

Updating your Sunlu T3 firmware can bring several benefits, including: