https://devzone.nordicsemi.com/f/nordic-q-a/18276/can-nrf-toolbox-allow-app-triggered-ota-dfuI saw the example of Andriod nRF Master Control/Connect app triggering the FOTA for mbed platform without using any button. Unfortunately, I don&#39;t have Andriod device and the IOS nRF Connect doesn&#39;t perform FOTA. I used nRF Toolbox DFU instead. I canen-USTelligent Community 13Fri, 09 Dec 2016 16:04:19 GMThttps://devzone.nordicsemi.com/thread/70570?ContentTypeID=1Fri, 09 Dec 2016 16:04:19 GMT137ad170-7792-4731-bb38-c0d22fbe4515:94f14da9-f779-4cac-a644-3030ee42f5f7bjorn-spockeli<p>I am afraid that I am not familiar with mbed on how our bootloader is used in their &quot;platforms&quot;. If the device is advertising the default Nordic DFU Service, then you should be able to perform bottonless DFU using the iOS nRF Toolbox app. You did flash the bootloader hex file to you device right?</p><div style="clear:both;"></div>