T3 Firmware Update 'link' - Sunlu

You can obtain the firmware from official or community sources: Official Website : Download the latest Sunlu T3 32-bit Firmware (e.g., version 3.40 or newer) from the Official Sunlu Download Page Community/Custom

Updated firmware often allows higher maximum temperatures (e.g., raising the cap from 260°C to 300°C for the hotend, if hardware permits), enabling you to print nylon or polycarbonate. Sunlu T3 Firmware Update

(thermal runaway, ABL not saving). Otherwise, keep the stock firmware. If you want better features, skip official updates and go straight to Marlin custom builds (e.g., from Insanity Automation or TH3D) – they’re more reliable and add advanced options like linear advance. You can obtain the firmware from official or

– A simple 20mm calibration cube is perfect. if hardware permits)