https://devzone.nordicsemi.com/f/nordic-q-a/13925/flashing-with-keil-vs-nrfgostudioHello, I am using S110 8.0 soft device and using the example Nordic_UART. I am able to compile the project file in KEIL and flash it onto my board. I don&#39;t see any errors or warnings. So, I know flashing it was successful. However, I don&#39;t see anyen-USTelligent Community 13Wed, 18 May 2016 11:54:37 GMThttps://devzone.nordicsemi.com/thread/53229?ContentTypeID=1Wed, 18 May 2016 11:54:37 GMT137ad170-7792-4731-bb38-c0d22fbe4515:c4f55e63-b6c1-4fba-bd5b-51cedfe4704eSusheel Nuguru<p>Keil uses standard underlying debugger interface and uses the nordic plugin algorithms to manage flash and ram. This is more restricted/standarized (between different debuggers) on how it does flashing and verification.</p> <p>nRFGo studio uses nrfjprog command line tool under the hood and only works with Segger JLink debugger.</p> <p>Seems like there is something with the Nordic_UART you compiled and it can be easily tested. use nrfjprog or nRFGo studio to flash your compiled hex file and I would guess that you will NOT see any advertising. If you compile your project with no optimizations then you should be able to debug why your device is not advertising. There must be a failure in the code somewhere.</p><div style="clear:both;"></div>