nRF52832 BLE secure DFU bootloader

[gringlediscus]

I'm trying to follow the SDK 15.2.0, nRF52832 development board,  BLE Secure DFU bootloader example.  I cannot seem to get beyond exception error running nrfutil to download new image: Exception: Connection Failure - Device not found!. 

The device is visible in nRF Connect v2.5.0, board contains image sd_132_bootloader_buttonless_with_setting_page_dfu_secure_ble_debug_without_bonds.hex loaded earlier with nRFgo Studio v1.21.2.10.  I found no means of downloading using nRF Connect, though I could enable buttonless DFU.

I'm using nrfutil command line

nrfutil dfu ble -ic NRF52 -f -pkg c:\CGM\nRF5_SDK_15.2.0_9412b96\examples\dfu\secure_dfu_test_images\ble\nrf52832\ble_app_buttonless_dfu_with_bonds_s132.zip

When done it appears to have erased the original application.

Clearly I'm missing something......

[gringlediscus]

ahh, re-imaged using nrfGo Studio, downloaded new image in nrfConnect as described in documentation, when complete no error reported board did not advertise, not sure app was successfully downloaded.  Seems to be same as when I used nrfutil.