The “blink” sketch is loaded in a single step *on top* of the Arduino bootloader, so (if you haven’t reprogrammed it) there shouldn’t be any way for it to blink unless the bootloader is indeed active.
You might also check to be sure that the 10 k resistor and 0.1 uF cap are installed correctly and in good shape, as those are also necessary for correct function.
If all else fails, contact our shop for a return– we can check for correct function and reflash it if indeed necessary.
