NRF dongle not booting up after flashing

[skelly7769]

The firmware that i flashed onto it worked on others dongles but mine doesnt boot up or windows doesnt detect it or play the usb sound

[Amanda Hsieh]

Hi, 

Are you using this nRF52840 Dongle? or provide by other vendors? 

How do you program the dongle? and What firmware are you flashing?

This tutorial  nRF52840 Dongle Programming Tutorial might help. 

Regards,
Amanda H.

[skelly7769]

I'm using the normal dongle nrf52840 trying to flash it through programmer as a steamvr dongle it replaces the bootloader with nothing I believe the issue is that I need bootloader.hex

[Amanda Hsieh]

The image is in the "Revert to production bootloader" section in that nRF52840 Dongle Programming Tutorial or you could generate it from the nRF5_SDK\examples\dfu\open_bootloader. 

[skelly7769]

It still doesnt recognize the usb or make a sound

[skelly7769]

also the file i got came with the UF2 too but idk how to put it on the dongle

[Amanda Hsieh]

The device will reset when the upgrade completes and the dongle will no longer show up in nRF Connect unless the application used DFU Trigger Library is used, as it is no longer in DFU mode. You will get an error stating "Reopen device failed" in this case, and have to push the RESET button in order to make it show up in nRF Connect Programmer again.

-Amanda H.

[skelly7769]

I know that it shouldn't pop up in nRF connect but it won't show up in device manager like it's not connected. How can I change the uf2 file on the dongle?