Yeah Occam's razor says your efforts would be much better spent on flashing custom firmware than a retrofit. That or a deliberate backdoor built into the chip

Yeah Occam's razor says your efforts would be much better spent on flashing custom firmware than a retrofit. That or a deliberate backdoor built into the chip from the ground up. Or something like this: https://m.youtube.com/watch?v=_eSAF_qT_FY https://m.youtube.com/watch?v=_eSAF_qT_FY But a nearly magic rice-grain part with a microcontroller and networking?? You could make a fortune in IOT with something that capable.