Default startup code in Espruino binary

Hi - I'm not sure which board you're using, but you could possibly use E.setBootCode('...',true) with your code, then could just read the data out of flash and then write that file to all the other boards?

If you're building yourself why not just add 'default_console' : "EV_SERIAL6", in the board.py file?

... to add your own code you'd be better off adding your own library - for example the Wio LTE executes JS this way: https://github.com/espruino/Espruino/blo­b/master/libs/wio_lte/jswrap_wio_lte.c#L­150