I'm developing on a connect me 9210 (Netos74) and am also experiencing a similar problem. I've been able to get the unit to consistently fail. The problem seems to lie in the main() function call of src/bsp/common/main.c. This code gets called right after the bootloader decompresses the application image into ram. If I attempt to reset the unit by driving pin 14 low during the execution of the main() call, the unit goes into some unknown state that can only be recovered with a hard power cycle. I'm not sure exactly what in the main() function call is causing this, but the unit has always been able to reset properly when it's not in the main() function.