NRF52840 Dongle not working properly

[Ceranthor]

Hi,

I have a problem with my nrf dongle i have working example on the DK and i could not put this onto the dongle. I tried dedicated examples and they are not working too. For example ble app blinky the softdevice and the app file were good, device had green light however when i tried to connect via my phone (nrf connect app) it could not connect and the dongle changed its light to red and was not able to detect by nrf connect on PC. Also i could not programm the bootloader (open_bootloader) from examples for PCA 10059. I do not know what to do next. 

[Simonr]

Hi

Have you checked out our Dongle programming tutorial available here. The device blinking with a green light sounds correct for an advertising device, but when the light changes to red (pulsing red), it sounds like it have returned to Bootloader mode for some reason, which should only occur if you press the button mounted on the side of the Dongle while it's running an application.

Please check out the Dongle programming tutorial to make sure you've flashed the application correctly onto your Dongle, and that you've not accidentally erased the bootloader. How to revert it to the production bootloader is also described.

Best regards,

Simon

[Ceranthor]

I followed steps from this tutorial. I cannot even revert the bootloader using nrf connect -> programmer i tried multiple times and every bootloader and none of them works