Sunlu T3 Firmware Update < 2025-2026 >

The direct drive on the T3 requires precise steps. Send G-code via Pronterface or USB: M92 E405 (Standard T3 direct drive value – verify with Sunlu's release notes). M500 (Save)

To update the firmware on your , you will primarily use an SD card to flash a file directly to the printer's 32-bit motherboard. 1. Prepare Your Hardware Sunlu T3 Firmware Update