I wasnt really bothered by the chip dying as this was one of 2 sacrificial controller boards I kept just for messing around with.) And the results Apparently we can corrupt (ideally just) the first couple of blocks of flash if we bully PIN 28 while the chip is trying to start up. Is the chip fried Its at this point that I coded up the flash tool to try and read the flash contents. Maybe I saw a presentation somewhere about blackbox chips and NC pins years and years and years ago but I could just be imagining things.Įither way, about 5 minutes of poking at PIN 28 with a resistor connected to 3.3v in hand and triggering RESET at random intervals while running a continuous command scan. I have no logical explanation as to why I came to this decision. So maybe we have to set multiple pins into multiple states for it to work. No obvious BOOT pin as one would expect with a device thats not meant to be tampered with.īut maybe pulling some pin high or low during reset will get me somewhere.

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Sanyo tool reset bq8030 datasheet