https://devzone.nordicsemi.com/f/nordic-q-a/59491/combining-nus-and-buttonless-dfuHi, I am relatively new with ble and nordic development. I am working with the nus service for communicating but now i also want to have ota firmware update. I am trying to combine buttonless dfu with nus service. I followed this tutorial https://wwwen-USTelligent Community 13Thu, 26 Mar 2020 14:17:00 GMThttps://devzone.nordicsemi.com/thread/241882?ContentTypeID=1Thu, 26 Mar 2020 14:17:00 GMT137ad170-7792-4731-bb38-c0d22fbe4515:3a3099a2-5350-4cf5-8b0d-8e8dd315ef9buDog<p>I was able to&nbsp; make it work. I used the code from the tutorial but added peer manager to it as well. Enabled peer manager and fstorage inside the sdk file.&nbsp;&nbsp;<br /><br />I think the problem was with the bootlader. To begin i was compiling the bootloader myself from the code but i ended up using the &quot;secure bootloader without bonds&quot; hex file.&nbsp;</p><div style="clear:both;"></div>