Sunlu: T3 Firmware Update

Navigate the T3 menu: Menu > Info > About Machine > Firmware Version

Write this down. You will need it to confirm the update succeeded. Sunlu T3 Firmware Update

The official Sunlu firmware is often months behind the mainline Marlin branch. For experts, compiling your own firmware allows for custom boot screens, advanced power loss recovery, and Input Shaping. Navigate the T3 menu: Menu > Info >

If you want to compile your own:

Sunlu does not have the most organized repository, but official files are available. The official Sunlu firmware is often months behind