Stock Sunlu T3 firmware uses an older version of Marlin with basic jerk and acceleration control. Updated firmware unlocks (or Pressure Advance).
Do you plan to use the or a custom community build ?
If your Sunlu T3 is already printing perfectly and you’re happy with its performance, you may not need to update immediately. However, if you’ve been experiencing bottom-layer adhesion problems, false clog alerts, or general instability, the V3.43 firmware update is a low-risk, high-reward solution that can make your printer in the ways that matter most. sunlu t3 firmware update better
The because it moves the printer from its restricted factory settings to a more robust, optimized state. By taking the time to update your firmware and properly tune your machine, you can achieve superior print quality, faster speeds, and a more reliable 3D printing experience.
Provides sharper corners and more consistent extrusion. Stock Sunlu T3 firmware uses an older version
Once the UI loads, go to "About Printer" to confirm the new version number. Post-Update Calibration
However, many early adopters and reviewers discovered that the "stock" experience had significant flaws. As detailed in an early Tom's Hardware review, the Fast Mode often led to failed prints, with misaligned toolpaths, poor extrusion, and gaps in the surface. Furthermore, the initial firmware had issues with settings like Power Loss Recovery causing zits on prints, and the filament jam detection was often unreliable. This is where a firmware update comes in to save the day. If your Sunlu T3 is already printing perfectly
: After any firmware update, always re-calibrate your Z-Offset and run a fresh PID tune for the extruder to ensure consistent heating. klipper/config/printer-sunlu-t3-2022.cfg at master - GitHub
If you want, I can:
For the truly adventurous, installing Klipper firmware makes the Sunlu T3 an entirely different machine. Klipper offloads the complex calculations to a Raspberry Pi or a similar device, allowing for input shaping and pressure advance.