https://devzone.nordicsemi.com/f/nordic-q-a/11337/nrf51-dk-fail-txt-timeoutI am using my nrf51-DK with mBed for prototyping. I noticed recently, that the DK had stopped broadcasting a BLE service, so I followed instructions to update the firmware in the hope to reset anything that was broken when I noticed the file: failen-USTelligent Community 13Mon, 18 Jan 2016 11:44:06 GMThttps://devzone.nordicsemi.com/thread/42684?ContentTypeID=1Mon, 18 Jan 2016 11:44:06 GMT137ad170-7792-4731-bb38-c0d22fbe4515:0936e6fc-d215-4cc5-84ef-fdca68993c85Hung Bui<p>Hi George,</p> <p>When you hold the reset button an turn on (or plug in) the board, do you have the board appear as BOOTLOADER driver ? If you drag and drop the file <a href="https://www.nordicsemi.com/eng/nordic/download_resource/38673/3/89508585">nRF51-DK-mbed-IF</a> that you can download from our <a href="https://www.nordicsemi.com/eng/Products/nRF51-DK">web</a>. Do you have the same issue ?</p><div style="clear:both;"></div>