nRF52840 custom boards executes code only when Jlink is connectedhttps://devzone.nordicsemi.com/f/nordic-q-a/61997/nrf52840-custom-boards-executes-code-only-when-jlink-is-connectedI have a strange problem. We built 100 custom boards. I&#39;ve only checked about 50 boards so far. 47 boards work properly. 3 do not. We used secure_bootloader_uart_pca10056 example and did minimal changes to fit with our GPIO configurations. Loadeden-USTelligent Community 13Tue, 02 Jun 2020 17:11:11 GMTRE: nRF52840 custom boards executes code only when Jlink is connectedhttps://devzone.nordicsemi.com/thread/252830?ContentTypeID=1Tue, 02 Jun 2020 17:11:11 GMT137ad170-7792-4731-bb38-c0d22fbe4515:8f2e29ba-cadc-4930-8d98-67fe00aeed57Dlo123<p>Thank you Marjeris, I&#39;ll submit a private ticket.</p><div style="clear:both;"></div>RE: nRF52840 custom boards executes code only when Jlink is connectedhttps://devzone.nordicsemi.com/thread/252823?ContentTypeID=1Tue, 02 Jun 2020 16:44:45 GMT137ad170-7792-4731-bb38-c0d22fbe4515:c648f466-0937-41a5-8a28-24ddb570a310Marjeris Romero<p>Hi,</p> <p>Perhaps you can send your hardware files for review here in Devzone? If you prefer you can create a private ticket for this and the hardware files (schematics and layout) will be reviewed by a Nordic engineer, including power supply.</p> <p>Best regards,</p> <p>Marjeris</p><div style="clear:both;"></div>