https://devzone.nordicsemi.com/f/nordic-q-a/61780/button-led-doesnt-glowI bought the device NRF52840 and tried to put the hex code through USB connected to power button. The HRM hex supposed to blink the LED1 for broadcasting but it doesnt do it and i am not able to connect Error says the device doesnt have the requireden-USTelligent Community 13Thu, 18 Jun 2020 00:06:43 GMThttps://devzone.nordicsemi.com/thread/255643?ContentTypeID=1Thu, 18 Jun 2020 00:06:43 GMT137ad170-7792-4731-bb38-c0d22fbe4515:05002725-4d28-4c57-8ae8-726b1a57fd8fSubhransu<p>It got resolved. I used the programmer and it worked</p> <p></p> <p>Thank You</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/252343?ContentTypeID=1Fri, 29 May 2020 09:29:01 GMT137ad170-7792-4731-bb38-c0d22fbe4515:b267e47e-1346-4c19-b03c-eff81c6628f7Joakim Jakobsen<p>Hi.</p> <p>Maybe you could provide some more information about your setup?</p> <p>What version of the nRF5 SDK are you working with? Are you using the precompiled .hex file in the SDK?</p> <p>How are you downloading the .hex file do you device. Are you using the nRF52840 development kit, or are you using a custom board?</p> <p>If you are not using the precompiled .hex file in the SDK, did you remember to flash the softdevice?</p> <p>Br, <br />Joakim</p><div style="clear:both;"></div>