https://devzone.nordicsemi.com/f/nordic-q-a/14896/dfu-on-nrf52-dk-problemHello, I have an problem with DFU on nRF 52 I have followed this thread devzone.nordicsemi.com/.../ but failing to upload firmware. I have attached screen shot. You can see in screen shot first trying to upload firmware and after some time it&#39;sen-USTelligent Community 13Fri, 01 Jul 2016 11:12:29 GMThttps://devzone.nordicsemi.com/thread/56863?ContentTypeID=1Fri, 01 Jul 2016 11:12:29 GMT137ad170-7792-4731-bb38-c0d22fbe4515:b5adf77f-2c9a-4d25-90b5-c1b09e27fdfeRajneesh<p>I have found Answer from here, <a href="https://devzone.nordicsemi.com/question/64206/getting-a-gatt-conn-timeout-message-when-trying-to-upload-a-new-firmware-via-ble-dfu/">devzone.nordicsemi.com/.../</a></p> <p>This will work well</p><div style="clear:both;"></div>