https://devzone.nordicsemi.com/f/nordic-q-a/101881/rtt-viewer-doesn-t-show-any-mcuboot-log-messagesProcedure to reproduce this issue is as follows. 1. cd D:\ncs\v2.3.0\bootloader\mcuboot\samples\zephyr\hello-world 2. Adding the following configuration to prj.conf file. # logging CONFIG_LOG=y CONFIG_LOG_MODE_IMMEDIATE=n CONFIG_USE_SEGGER_RTT=yen-USTelligent Community 13Fri, 14 Jul 2023 13:49:10 GMThttps://devzone.nordicsemi.com/thread/436518?ContentTypeID=1Fri, 14 Jul 2023 13:49:10 GMT137ad170-7792-4731-bb38-c0d22fbe4515:4a8aa94c-ed5a-45e9-92ed-4a8c5ba5d8f1snowuyl<p>Thanks for your reply!</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/436513?ContentTypeID=1Fri, 14 Jul 2023 13:43:58 GMT137ad170-7792-4731-bb38-c0d22fbe4515:355c52ff-a043-41a1-9820-8348922fadd9Vidar Berg<p>Hello,</p> <p>There is currently no configuration that allows you to get seamless RTT logging between the bootloader and app, unfortunately. There are some open PRs which try to address this. For instance, this one:&nbsp;<a href="https://github.com/zephyrproject-rtos/zephyr/pull/53569">https://github.com/zephyrproject-rtos/zephyr/pull/53569</a>. If possible, I would recommend you use UART for now.&nbsp;</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/436377?ContentTypeID=1Fri, 14 Jul 2023 03:28:12 GMT137ad170-7792-4731-bb38-c0d22fbe4515:77fc5df5-e6c6-4f84-8b3d-8632b67f6039snowuyl<p><img style="max-height:240px;max-width:320px;" src="https://devzone.nordicsemi.com/resized-image/__size/640x480/__key/communityserver-discussions-components-files/4/RTT_5F00_V7.88k_5F00_nRF5340_5F00_appcore_5F00_no_5F00_mcuboot.PNG" alt=" " /></p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/436376?ContentTypeID=1Fri, 14 Jul 2023 03:27:57 GMT137ad170-7792-4731-bb38-c0d22fbe4515:85674961-78d0-407e-bb31-65bc282a03e7snowuyl<p><img style="max-height:240px;max-width:320px;" src="https://devzone.nordicsemi.com/resized-image/__size/640x480/__key/communityserver-discussions-components-files/4/7028.RTT_5F00_V7.88k_5F00_nRF5340_5F00_appcore.PNG" alt=" " /></p><div style="clear:both;"></div>