Sunlu T3 Firmware [SAFE]

Unlike Creality printers, which have massive community support, the Sunlu T3 suffers from a fragmented firmware ecosystem. Sunlu does not maintain a centralized, up-to-date GitHub repository. The firmware that ships from the factory is often version v2.0.8.2 or v2.0.8.26 (based on Marlin), but it is usually locked down, missing thermal runaway protections (ironically) or advanced motion settings.

: Check the "About Printer" menu to confirm the version has changed. Are you looking to enable a specific feature (like a BLTouch) or just trying to with the current stock version? Custom Firmware for SUNLU T3 by Kaot93 - Printables.com sunlu t3 firmware

This is a classic Sunlu T3 bug in v1.0.2 firmware. Update to v1.0.4 or reverse the extruder motor plug on the mainboard. : Check the "About Printer" menu to confirm

Because it runs Marlin, you can flash: