nrfutil dfu ble failed to open Win 10

[Kent]

I try to load my nRF52 with app via ble from windows 10 laptop.

nRF52 dev kit is loaded with the Softdevice and Bootloader from nRF5_SDK_12.1.0\examples\dfu\ble_dfu_send_hex\test_images_update_nrf52.

I have no problems to load nRF52 dfu_test_app_hrm_s132.zip from Mobile nRF Toolbox.

I try to do as admin:

"nrfutil dfu ble -ic NRF52 -n "DfuTest" -p COM5 -pkg dfu_test_app_hrm_s132.zip"

from windows 10 python2.7.12(nrfutil2.0.0/pc_ble_driver_py0.8.0) only version installed.

but get open failed exception (access denied):

"C:\Python27\lib\site-packages\pc_ble_driver_py\ble_driver.py", line 126, in wrapper raise NordicSemiException('Failed to {}. Error code: {}'.format(wrapped.name, err_code)) pc_ble_driver_py.exceptions.NordicSemiException: Failed to open. Error code: 13

I can see nRF52 device "DfuTest" in win bluetooth device list.

Any ideas?

[Kent]

Hello

As you said, pc-nrfutil-1.5.0 have the correct pc-ble-drive for dfu example using SDK v12.1.0 ? So my problem is I cant install it correctly and therefore I cant even run "nrfutil --help" or anything. Should I avoid SDK v12.1.0 and use nrfutil2.0.0?

The reason I left out the -f option was otherwise the softdevice and bootloader already in place will be erased and then in next step nrfutil2.0.0 will timeout probably due to there is no bootloader anymore.

For the moment I dont have any success so I will try to use pc-nrfutil-1.5.0 in linux environment...