I have downloaded external_flash example from https://github.com/circuitdojo/nrf9160-feather-examples-and-drivers/blob/v1.7.x/ and run it without any modification. The example can erase and flash but it would not start in main() or hit any breakpoint set.
What am I missing?
My setup is Sparkfun Thing plus nRF9160 with nRF Connect SDK v1.7.0, SEGGER Embedded Studio V5.6
