Ender 3 pro 4.2 2 bltouch firmware July 8, 2019 16 32 64 128 Ender 3 4.2 2 bltouch firmware Ender 3 max 4.2 2 bltouch firmware Ender 3 bltouch marlin configuration Ender 3 pro 8 bit firmware update Ender 5 pro firmware update sd card
