Unable to load firmware using nRF52840 DK using programmer v1.4.2 and nRF Connect v3.4.0https://devzone.nordicsemi.com/f/nordic-q-a/62480/unable-to-load-firmware-using-nrf52840-dk-using-programmer-v1-4-2-and-nrf-connect-v3-4-0I&#39;ve been using the nRF52840 DK to load the firmware into my custom nRF52840 board using nRF Connect v2.6.0 and programmer v1.0.2. However, on another laptop when I install nRF Connect 3.4.0 and it forces me to install v1.4.2 (anyway to downgrade thisen-USTelligent Community 13Fri, 12 Jun 2020 10:50:47 GMTRE: Unable to load firmware using nRF52840 DK using programmer v1.4.2 and nRF Connect v3.4.0https://devzone.nordicsemi.com/thread/254678?ContentTypeID=1Fri, 12 Jun 2020 10:50:47 GMT137ad170-7792-4731-bb38-c0d22fbe4515:47a9a866-b161-4f48-934a-7682cd706d43haakonsh<p>Hmm, I&#39;ll do some digging.<br /><br />In the meantime I suggest you use the command line tool nrfjprog:<br /><br />call &#39;nrfjprog -f nrf52 -e&#39; to do an erase all of the flash and UICR.<br /><br />call &#39; nrfjprog -f nrf52 --program your_hex_file.hex&#39; to program the device.&nbsp;<br /><br /><br /></p> <p>See&nbsp;<a title="Programming nRF5x SoCs with nrfjprog" href="https://infocenter.nordicsemi.com/topic/ug_nrf5x_cltools/UG/cltools/nrf5x_nrfjprogexe.html?cp=8_1_3">Programming nRF5x SoCs with nrfjprog</a>&nbsp;for more information.&nbsp;</p><div style="clear:both;"></div>