https://devzone.nordicsemi.com/f/nordic-q-a/54990/in-nrf52832-device-facing-the-issue-while-uploading-the-dfu-packets-using-mobile-app-nrf-toolboxi am working on nrf52832 DK, i am trying to upgrade my development kit firmware using mobile and i successfully build &quot;secure_bootloader_ble_s132_pca10040.hex &quot; application using segger embedded studio i got the softdevice &quot; s132_nrf52_7.0.1_softdeviceen-USTelligent Community 13Fri, 29 Nov 2019 12:00:13 GMThttps://devzone.nordicsemi.com/thread/222784?ContentTypeID=1Fri, 29 Nov 2019 12:00:13 GMT137ad170-7792-4731-bb38-c0d22fbe4515:8bf65ee4-4eb7-4827-ab8f-faf061176f1bhitesh poshia<p>This Issue is resolved. I am able to generate &#39;bootloader.hex&#39; file using DFU application. There was problem in Build.Thank you</p><div style="clear:both;"></div>