Hi,dear. You can download these firmware programs and try to refresh it Ender-3 - Marlin2.0.1- V1.3.1- BLTouch - TMC2225.bin Ender-3- Marlin2.0.1 - V1.1.2 - BLTouch - TMC2225.bin Ender3Marlin2.0.6HW4.2.7BLTouch.bin