Hello, there! For Cura, you can click: https://ultimaker.com/en/products/cura-software For Arduino, you can click: https://www.arduino.cc/en/Main/Software For Printrun, you can click: https://github.com/cdaringe/Printrun Please UNZIP the file of firmware before uploading. You can print ''Testing Circle 40×30×1.STL'' to test the printer for leveling the platform and testing the accuracy of printing size. Please feel free to cantact us if you have any problem! ^_^ james@anycubic3d.com / anycubic@gmail.com Happy printing!