I worked on an embedded project that changed the modules of different functions, but the program code for the mega arduino is too big to integrate all the functions of the modules and to rewrite it, I researched it and tested it that it is possible to start the .hx file of the Sd, so I wondered if I can configure the bootloader to determine which module the system is using so that it can switch between the .hex files stored in SD. Has anyone done anything like this?