https://devzone.nordicsemi.com/f/nordic-q-a/20761/is-it-possible-nrf52-nus-service-and-buttonless-dfu-service-work-together-like-the-given-example-ble_app_hrs-s132_with_dfuHi, I was trying to add buttonless DFU service along with NUS service. I used SDK v11. Taken the example ble_app_hrs, s132_with_dfu. And added my existing NUS service. I faced a problem that, both are not working together. If i completely disable DFUen-USTelligent Community 13Tue, 28 Mar 2017 08:02:07 GMThttps://devzone.nordicsemi.com/thread/81064?ContentTypeID=1Tue, 28 Mar 2017 08:02:07 GMT137ad170-7792-4731-bb38-c0d22fbe4515:8bed6c56-daf6-4102-b1e6-02e3341fe353pravi<p>Using nrf connect app, I can just connect it. Showing UART and DFU service. I can&#39;t send or receive any data. The advertising LED is keep on running. And suddenly mobile app getting disconnected. Connection not establishing properly.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/81063?ContentTypeID=1Tue, 28 Mar 2017 07:47:52 GMT137ad170-7792-4731-bb38-c0d22fbe4515:ef4ee3ce-f3d4-4c7e-9e1d-847555c4d159FormerMember<p>Where in the code does your project stop running? During initialization or at a later point in time?</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/81062?ContentTypeID=1Mon, 27 Mar 2017 12:43:10 GMT137ad170-7792-4731-bb38-c0d22fbe4515:bd3d8c43-227d-4b81-ae44-8f209ce440d6pravi<p>Only Difference is 2 custom UUIDs, one for NUS and one for DFU. Can I have a sample code working both NUS and DFU ?</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/81061?ContentTypeID=1Mon, 27 Mar 2017 11:40:40 GMT137ad170-7792-4731-bb38-c0d22fbe4515:9acd036f-c1b0-421d-8ed7-c99642969d13FormerMember<p>There are a few things you could check:</p> <ul> <li>The number of custom UUIDs set in the application.</li> <li>The required RAM (sd_softdevice_enable() ).</li> <li>(The attribute table size. Does it change anything if it is increased?)</li> </ul><div style="clear:both;"></div>