https://devzone.nordicsemi.com/f/nordic-q-a/73545/bricked-nrf52840-dkIt was my first time working with the Segger embedded IDE SEGGER Embedded Studio for ARM Release 5.42 Build 2021031901.45616 and NRF52840-DK. PCA10056 2.0.0 2020.3 683739774 When I did plug the NRF52840-DK, it appeas as a new USB memoryen-USTelligent Community 13Sun, 04 Apr 2021 16:59:25 GMThttps://devzone.nordicsemi.com/thread/302944?ContentTypeID=1Sun, 04 Apr 2021 16:59:25 GMT137ad170-7792-4731-bb38-c0d22fbe4515:685d55d6-9ad0-4a77-bbf1-112cc7cd4565Mikel_allende<p>&iexcl;Thanks a lot! It seems that works fine. THANK YOU!</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/302906?ContentTypeID=1Fri, 02 Apr 2021 21:04:01 GMT137ad170-7792-4731-bb38-c0d22fbe4515:d0db3094-0116-45e6-bba9-432cb56d4a8fDmitry<p>Hi,</p> <p>try to hold IF BOOT/RESET button while powering on the board, it should enter bootloader mode - a new USB storage&nbsp;drive&nbsp;should appear. Then copy <a href="https://www.nordicsemi.com/-/media/Software-and-other-downloads/Dev-Kits/nRF5x-DK-files/J-Link-OB-SAM3U128-V2-NordicSemi-170724.bin">j-link firmware</a>&nbsp;to&nbsp;that drive and power-cycle the board.</p><div style="clear:both;"></div>