Programmer outputting error - Failed to detect device after reboot. Timed out after 10 seconds.

[Dan Brown]

Programmer tool v3.0.9 outputting the error - "Failed to detect device after reboot. Timed out after 10 seconds." After the user attempts to write a blinky hex file to a nrf52840 dongle. Any help would be appreciated. Thanks.

 

[Elfving]

Hello Daniel,

First of all, the dongle can be a bit difficult to develop with compared to a DK, as the dongle does not have an onboard debugger/ programmer.

For that reason you won't be able to flash it in the usual sense of the word, by just inserting it into the USB slot on your computer. So, how are you flashing it?

Regards,

Elfving

[Dan Brown]

I'm using the nrf connect programmer v3.0.9 to flash the dongle.

Regards,

Daniel.

[Sigurd Hellesvik]

Hi Daniel,

I will continue to help in this case.

Can you explain the steps taken in more detail?

Regards,
Sigurd Hellesvik

[Dan Brown]

Hi Sigurd, I am trying to flash my nrf52840 dongle with the hex file containing a BLE Blinky example provided by the NRF5 SDK. I am using segger embedded studio and the NRF connect programmer to flash the device. 

Many thanks,

Daniel.

[Sigurd Hellesvik]

Does the LED on the dongle light up, signalling that it is in bootloader mode?

If not, try pressing the smaller button(which is sideways) to enter this mode before programming.

[Dan Brown]

The LED on the dongle does light up, and after I write the hex file to the dongle LED 1 turns green.

[lara]

have u solved the issue..iam also facing the same.