https://devzone.nordicsemi.com/f/nordic-q-a/83055/mcuboot-serial-recovery-mode-with-mcumgrI am trying to build an application that can switch into MCUBoot&#39;s serial recovery mode and receive a new firmware image over the serial port. I&#39;m using NCS 1.7.1 through Visual Studio Code on a 64-bit Windows 10 machine. I&#39;ve set up a multi-image builden-USTelligent Community 13Thu, 23 Dec 2021 14:35:29 GMThttps://devzone.nordicsemi.com/thread/344979?ContentTypeID=1Thu, 23 Dec 2021 14:35:29 GMT137ad170-7792-4731-bb38-c0d22fbe4515:8a4040ad-271b-4971-926d-1374bf9b10efBDA<p>Oh wow, that&#39;s true for me too.&nbsp; Echo doesn&#39;t work, but the other mcumgr commands do.&nbsp; Thanks!</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/344972?ContentTypeID=1Thu, 23 Dec 2021 14:10:08 GMT137ad170-7792-4731-bb38-c0d22fbe4515:2876310c-7acd-4616-9757-762a86d9e8dfHung Bui<p>Hi Brendan,&nbsp;<br />How did you enter MCUBoot recover mode ? I assume you press an hold a button when resetting?&nbsp;<br />I would suggest to set&nbsp;CONFIG_MCUBOOT_INDICATION_LED=y to the mcuboot child image to have an indication that it&#39;s running.&nbsp;<br />I found that when in recovery mode even though echo doesn&#39;t work the image update or reset function still works. Please try again.&nbsp;</p><div style="clear:both;"></div>