Ender 3 pro marlin firmware 4.2 7 July 8, 2019 16 32 64 128 Ender 3 marlin firmware 4.2 7 Marlin firmware ender 3 pro cr touch 4.2 7 Marlin firmware ender 3 pro bltouch 4.2 7 Ender 5 pro firmware update Marlin 2.1 firmware ender 3 Marlin ender 3 pro 4.2.7
