1. A method of enabling software development for an integrated circuit, the integrated circuit being configured to run a boot program that prevents unverified software from subsequently being loaded onto, or run by, the integrated circuit, the method including the step of loading an intermediate program onto the integrated circuit, the intermediate program being customised for a particular one or more of a plurality of potential integrated circuits that, when run on the processor, enables loading or running of code on only the particular one or more integrated circuits.