west build fails when trying to sign MCUboot applicationhttps://devzone.nordicsemi.com/f/nordic-q-a/73036/west-build-fails-when-trying-to-sign-mcuboot-applicationI have a custom MCUboot boot loader working. Now I&#39;m trying to build an application to be updated by MCUboot. I&#39;ve added the following to prj.conf: CONFIG_BOOTLOADER_MCUBOOT=y CONFIG_MCUBOOT_SIGNATURE_KEY_FILE=&quot;/&lt;my full path&gt;/root-rsa-2048.pem&quot; Whenen-USTelligent Community 13Sun, 21 Mar 2021 15:11:33 GMTRE: west build fails when trying to sign MCUboot applicationhttps://devzone.nordicsemi.com/thread/301079?ContentTypeID=1Sun, 21 Mar 2021 15:11:33 GMT137ad170-7792-4731-bb38-c0d22fbe4515:bc50aa08-ea68-4dfd-a9b7-196e9ac6e997denis<p><span>I have the following in the&nbsp;applications&nbsp;prj.conf and now I am able to use a custom MCUBoot build (using MCUBoot git repo - not the NCS fork) to load and run the application:</span></p> <p><span>CONFIG_BOOTLOADER_MCUBOOT=y</span></p> <p><span>CONFIG_FLASH_BASE_ADDRESS=0x200</span></p> <p><span>CONFIG_MCUBOOT_EXTRA_IMGTOOL_ARGS=&quot;--header-size 0x200 --pad-header --pad --max-sectors 256&quot;</span></p> <p><span>CONFIG_MCUBOOT_SIGNATURE_KEY_FILE=&quot;/&lt;my full path&gt;/root-rsa-2048.pem&quot;</span></p><div style="clear:both;"></div>