Hi Robert, When it fails, can you connect the debugger and load in the symbols. My current suspicion is you're hitting the VBAT up NMI. You can also add a GPIO toggle into your default or NMI handler (since this is probably happening before your initialization you may need to initialize the GPIOs in this handler). I'm currently using the LP-MSPM0L2228 with gpio_toggle_output example. I have removed all jumpers on the XDS110 jumper block except the NRST jumper. I have fly wired 3.3V to VBAT. I have toggled the power: Long power offs (~5sec) to a turn on Short power offs ( 1s Short press <0.5 sec Rapidly pressing NRST on and off. I did this test on 2 separate boards with the same result. Regards, Luke
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