https://devzone.nordicsemi.com/f/nordic-q-a/118014/error-while-programming-custom-board-using-nrf5340dkHi, Encountering an error while trying to program a custom board connected to the nRF5340 DK via P20. The external board is connected to the nRF5340 DK through the P20 connector as follows: P20 (SWD CLK) → Custom Board SWDCLK P20 (SWD IO) → Customen-USTelligent Community 13Thu, 16 Jan 2025 13:37:40 GMThttps://devzone.nordicsemi.com/thread/518648?ContentTypeID=1Thu, 16 Jan 2025 13:37:40 GMT137ad170-7792-4731-bb38-c0d22fbe4515:d898d836-7826-4f01-9bf1-2f34614e5f9aKazi Afroza Sultana<p>Hello,</p> <p>Are&nbsp;the nrfjprog and jlink version are updated?&nbsp;</p> <p>nrfjprog --deviceversion --log; try this log to see the version number.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/518363?ContentTypeID=1Wed, 15 Jan 2025 04:18:39 GMT137ad170-7792-4731-bb38-c0d22fbe4515:52d7fc60-6ae7-4812-9dd1-8b823bddadc0Priya_m<p>Hi,<br />Yes, verified that the nRF5340 DK is providing 3V.Is there anything else i&nbsp;should do to resolve this issue?<br />Also tried to get the device version using this command&nbsp;<br />nrfjprog --deviceversion. <br />got this error<br />[error] [ Client] - Encountered error -102: Command connect_to_emu_with_snr executed for 248 milliseconds with result -102<br />[error] [ Worker] - An unknown error.<br />1050049054 - UNKNOWN</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/518259?ContentTypeID=1Tue, 14 Jan 2025 14:16:20 GMT137ad170-7792-4731-bb38-c0d22fbe4515:78db1589-564f-43b4-8e0b-764d9fed38f0Kazi Afroza Sultana<p>Hello,</p> <p>This error is common while programming custom board through DK.</p> <p>&#39;&#39;<span>The target board is powered solely by the nRF5340 DK connected to it, using pin VDDnrF of P20 for power.</span><br /><span>Verified that the voltage on the target board is 3V at pin VTG&#39;&#39;</span></p> <p><span>Did you check if the nRF5340DK has same voltage as 3V?</span></p><div style="clear:both;"></div>