Even with ABL, the Z-offset determines how close the nozzle is to the bed.
Some boards won't flash if the filename is the same as the previous one. Try naming it something unique like firmware_0415.bin sunlu t3 firmware
Updating your is a low-risk, high-reward upgrade. Whether you stick with official updates or move to custom Marlin firmware, you will likely find that your T3 operates more smoothly, levels better, and prints more reliably. Always remember to reset your EEPROM and recalibrate your Z-offset after every flash. Even with ABL, the Z-offset determines how close
Newer firmware versions often refine the mesh bed leveling process (5x5 points), leading to a better first layer. Whether you stick with official updates or move
By taking control of your Sunlu T3's firmware, you transform it from a rigid budget printer into a highly adaptable, precise, and fast manufacturing tool tailored exactly to your workflow.
Use the make menuconfig command to configure the micro-controller architecture matching your Sunlu T3 board (STM32 or GD32).