Estimated time: 15 minutes. Difficulty: Moderate.
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 Sunlu T3 Firmware Update
Updating the Sunlu T3’s firmware is straightforward if you follow the steps above. While the printer works well out of the box, a modern firmware can iron out small annoyances and occasionally add useful features like or better mesh bed leveling . Estimated time: 15 minutes