https://devzone.nordicsemi.com/f/nordic-q-a/103314/thingy91-not-able-to-debug-connect-via-nrf52833-dk-board-debug-portHi, I have nRF52833-DK (V-1.1.0). I am not able to Debug or flash thingy91 (nrf91 MCU) using nRF52833-DK board Debug port. I&#39;m able to connect with thingy91 (nRF52840) MCU using Same board. below error will show when i try to connect with nRF91 MCUen-USTelligent Community 13Wed, 30 Aug 2023 20:09:08 GMThttps://devzone.nordicsemi.com/thread/443792?ContentTypeID=1Wed, 30 Aug 2023 20:09:08 GMT137ad170-7792-4731-bb38-c0d22fbe4515:ea31581d-31d4-4af7-a3fe-7adc4731d1daAmanda Hsieh<p>Hi,&nbsp;</p> <p>nRF52833DK cannot support program thingy91. Please use nRF9160DK. See the&nbsp;<a href="https://developer.nordicsemi.com/nRF_Connect_SDK/doc/latest/nrf/device_guides/working_with_nrf/nrf91/thingy91_gsg.html#prepare-hw-ext-dp"><span>prepare the hardware</span></a>&nbsp;documentation.</p> <p>Regards,<br />Amanda H.</p><div style="clear:both;"></div>