https://devzone.nordicsemi.com/f/nordic-q-a/68361/nrf52840-doesn-t-start-after-power-cycle-when-flashed-over-swd-using-st-link-v2Hi People, I hope I can get help here or get pointed to a right forum where this can be answered. I am using u-blox NINA-B306 (based on nRF52840) in one of my custom made circuit boards. To flash it, I am using ST-Link v2 (as it supports SWD). I wanten-USTelligent Community 13Sun, 15 Nov 2020 17:03:12 GMThttps://devzone.nordicsemi.com/thread/280021?ContentTypeID=1Sun, 15 Nov 2020 17:03:12 GMT137ad170-7792-4731-bb38-c0d22fbe4515:4ce6073d-6630-4c24-9914-1a540774879dhmxmghl<p>Never mind. I found out that while the RESET_N pin was still connected to disconnected ST-Link, it was being pulled low causing MCU to be in constant reset.</p><div style="clear:both;"></div>