Nrf52840 can not be programmed through promgrammer app, and has been stuck in this interface. The USB driver installation prompt failed. What should I do?

RE: Nrf52840 can not be programmed through promgrammer app, and has been stuck in this interface. The USB driver installation prompt failed. What should I do?

Amanda Hsieh — Wed, 26 Jun 2019 09:37:26 GMT

Hi,

No.

Do you press "Yes" in the Confirm window after pressing the reset button (LED2 flashes red light)? If it still cannot help, could you post the log after that again? Thanks.

-Amanda

RE: Nrf52840 can not be programmed through promgrammer app, and has been stuck in this interface. The USB driver installation prompt failed. What should I do?

chenbin — Wed, 26 Jun 2019 08:24:10 GMT

i pressed the reset button , but not ok yet ，I did it in accordance with the data manual and the redlight was flashing correctly. So I need to rewrite the open DFU firmware ？

RE: Nrf52840 can not be programmed through promgrammer app, and has been stuck in this interface. The USB driver installation prompt failed. What should I do?

Amanda Hsieh — Tue, 25 Jun 2019 09:39:49 GMT

Press the reset button to put the Dongle into bootloader mode. Note that the reset button is the sideways button right next to the more obvious SW1 button on the Dongle:

-Amanda

RE: Nrf52840 can not be programmed through promgrammer app, and has been stuck in this interface. The USB driver installation prompt failed. What should I do?

chenbin — Tue, 25 Jun 2019 00:58:22 GMT

thank you fou you answer, i have already installed v6.44e , but still the same

RE: Nrf52840 can not be programmed through promgrammer app, and has been stuck in this interface. The USB driver installation prompt failed. What should I do?

Amanda Hsieh — Mon, 24 Jun 2019 11:20:55 GMT

Hi,

Please check and install J-Link firmware v6.44e.

-Amanda