https://devzone.nordicsemi.com/f/nordic-q-a/51596/nrf9160-disabling-uart-for-bootloader_mcubootHi, I have an SPI peripheral on pins 26, 27, 28, 29 which I&#39;m able to override the default system&#39;s UART0 pin assignments in nrf9160_pca10090ns.overlay. However when I enable CONFIG_BOOTLOADER_MCUBOOT I suspect it is somewhere grabbing those pins foren-USTelligent Community 13Mon, 02 Sep 2019 23:04:38 GMThttps://devzone.nordicsemi.com/thread/207510?ContentTypeID=1Mon, 02 Sep 2019 23:04:38 GMT137ad170-7792-4731-bb38-c0d22fbe4515:25656e4e-48df-4118-a81b-3b58eca05065GJSea<p>Thanks! Modifying&nbsp;nrf9160_pca10090_common.dts with my uart0 pin reassignments fixed the issue.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/207001?ContentTypeID=1Fri, 30 Aug 2019 07:17:51 GMT137ad170-7792-4731-bb38-c0d22fbe4515:79a0bb10-2ecb-41d5-82e3-6de29f6f53dcMartin Lesund<p>Hi GjSea,</p> <ul> <li>(<em>recommended</em>) Please add an <em>nrf9160_pca10090.overlay</em> file with your pin assignments in the folder&nbsp;<em>ncs/mcuboot/zephyr/</em></li> </ul> <p></p> <ul> <li>Or you could change the<em>&nbsp;nrf9160_pca10090_common.dts</em> file</li> </ul><div style="clear:both;"></div>