https://devzone.nordicsemi.com/f/nordic-q-a/90695/can-t-flash-thingy-53-using-external-probeHi. I&#39;m trying to flash a sample image to the Thingy 53 using the nRF9160DK (assuming this is possible and it&#39;s not mandatory to use the nRF5340DK), but when I try to do so using nRF Connect extension in VSCode, I get the following output: Alsoen-USTelligent Community 13Fri, 05 Aug 2022 09:43:50 GMThttps://devzone.nordicsemi.com/thread/380322?ContentTypeID=1Fri, 05 Aug 2022 09:43:50 GMT137ad170-7792-4731-bb38-c0d22fbe4515:ef018eed-e507-4461-a097-fe51c126b906MarioDLH<p>I tried to change it and now it works fine. Thanks for the support.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/380299?ContentTypeID=1Fri, 05 Aug 2022 08:01:20 GMT137ad170-7792-4731-bb38-c0d22fbe4515:ca19adc3-bb46-49d4-9d12-588167814a29Vidar Berg<p>Hello,</p> <p>It should be fine to program the Thingy with 9160DK. But it&#39;s important that you have the IO voltage set to 3 volts on the nRF9160 DK so it matches the IO voltage on the Thingy. The voltage is controlled through the board switch mentioned in the <span><a title="Debug output" href="https://infocenter.nordicsemi.com/topic/ug_nrf91_dk/UG/nrf91_DK/hw_debug_out.html?cp=2_0_4_3_11">Debug output</a></span> section of the user guide.</p> <p>Best regards,</p> <p>Vidar</p><div style="clear:both;"></div>