: If your printer is currently working perfectly, Sunlu suggests avoiding the v3.40 update as it may trigger unnecessary temperature alarms in some units. after the update? Custom Firmware for SUNLU T3 by Kaot93 - Printables.com
Testing after flash:
After updating, use these community-vetted settings to maximize the T3's "Fast Print" capabilities: sunlu t3 firmware update better
Turn off the printer, insert the card, and turn it back on. The screen will remain blank for about 15–30 seconds while it updates. : If your printer is currently working perfectly,