Dear,
I have nRF9160 DK, and I tried to control SW5 to debug/programme for nRF91 or nRF52.
I could programme for nRF91, but I couldnt do it for nRF52, for example, Im trying with /nrf/samples/bluetooth/central_uart/
and SW5 to nRF52, then Build and Run:

Did I do something wrong? misunderstand somewhere?
Regards,
hng