Well I own 2 Cube 3D printers. One was at 1.12 firmware, the other is at 1.14b. When I put the 1.14b firmware on a thumbdrive, the printer that is already at 1.14b won't accept it. When I used it on the 1.12 machine, I was able to trick the machine to load whatever I want. The 1.12 firmware machine is the machine I eventually gutted and turned into a reprap compatible machine. I'm going to leave the other machine untouched at 1.14b for now, the thing creates awesome prints.