https://devzone.nordicsemi.com/f/nordic-q-a/3004/android-dfu-ota-cannot-select-application-hex-fileFirst I noticed that nordic has already updated the andriod nrf toolbox app to use softdevice v7, which allows updating the softdevice, bootloader and application. The problem I am having is selecting the application .hex file to upload Is thisen-USTelligent Community 13Sat, 05 Jul 2014 03:10:28 GMThttps://devzone.nordicsemi.com/thread/11348?ContentTypeID=1Sat, 05 Jul 2014 03:10:28 GMT137ad170-7792-4731-bb38-c0d22fbe4515:8c950562-9c0d-40d5-b9a4-57741ae6dbd4tim<p>problem was the default file explorer.</p> <p>Using astro file manager did work</p><div style="clear:both;"></div>