https://devzone.nordicsemi.com/f/nordic-q-a/47954/problem-about-lpn-and-friend-node-in-meshHi, I notice that inside the MESH SDK, &quot;Friend&quot; is actual a hex file from zephyr, which I cannot modify. My goal is to set a &quot;Friend&quot; to connect more than 1 LPN (low power node), e.g. 1 Friend with 3-5 LPN. However, it seems like 1 Friend can only haveen-USTelligent Community 13Mon, 03 Jun 2019 13:10:10 GMThttps://devzone.nordicsemi.com/thread/190531?ContentTypeID=1Mon, 03 Jun 2019 13:10:10 GMT137ad170-7792-4731-bb38-c0d22fbe4515:baf095ab-2f8c-4998-bab2-b8000e892aa9Hung Bui<p>Hi Solin,&nbsp;</p> <p></p> <p>It&#39;s actually possible to build and modify the Friend node from Zephyr. The only limitation is that it&#39;s not Nordic&#39;s code and maybe quite different in term of the code structure.</p> <p>You can find the build instruction <a href="https://infocenter.nordicsemi.com/topic/com.nordic.infocenter.meshsdk.v3.1.0/md_examples_experimental_lpn_bin_README.html?cp=5_2_3_6_1_0">here</a>. You may want to get started <a href="https://docs.zephyrproject.org/latest/getting_started/index.html">here.</a>&nbsp;Use &quot;nrf52_pca10040&quot; as the board name for build command.&nbsp;</p> <p>For your particular requirement, you can change the number of LPN the friend node supports <a href="https://github.com/zephyrproject-rtos/zephyr/blob/master/subsys/bluetooth/host/mesh/Kconfig#L398">here</a>. (You need to rebuild the Friend repo)&nbsp;</p><div style="clear:both;"></div>