https://devzone.nordicsemi.com/f/nordic-q-a/68232/problem-to-reset-nrf52840-dongle-pcb-ver-1-2-0Hi, Recently, I purchase another nRF52840 dongle. I realised the dongle PCB was revised to 1.2.0. Previously, I had another dongle myself that was based on PCB ver 1.0.0. What I observe was there was a slight difference between the 2. Whenen-USTelligent Community 13Wed, 11 Nov 2020 15:59:06 GMThttps://devzone.nordicsemi.com/thread/279563?ContentTypeID=1Wed, 11 Nov 2020 15:59:06 GMT137ad170-7792-4731-bb38-c0d22fbe4515:c2b82c03-ebe3-4df3-9aef-819f2b3e67a2Hung Bui<p>Hi Cyril,&nbsp;<br />Could you let me know the script you used with nrfutil to flash the firmware on nRF52840 dongle ?&nbsp;<br />When you mentioned that the board v1.2 didn&#39;t reset itself, what you needed to do to reset it ?&nbsp;</p> <p>Could you try to use nRF Connect programmer to program the board instead of using nrfutil ?&nbsp;<br /><br />In theory, when the bootloader swap the image it will bootup the application after swapping.&nbsp;</p><div style="clear:both;"></div>