How to set dongle to boot mode?

[adrilarap]

Greetings! Sorry for the noob question here, but how can I enable boot mode for my nRF52840 Dongle? I tried pressing the large obvious button and nothing happened. I tried everything around it and nothing seems to be a button. It's embarrassing, but I just can't figure it out! I'm attaching the dongle pic and the pinout, if it helps. Thanks!

[Kenneth]

Hello,

It should be explained here:
https://infocenter.nordicsemi.com/index.jsp?topic=/ug_nrf52840_dongle/UG/nrf52840_Dongle/getting_started.html

For more indepth info:
https://devzone.nordicsemi.com/guides/short-range-guides/b/getting-started/posts/nrf52840-dongle-programming-tutorial

I do however strongly recommend to get an nRF52840-DK for development, since that have access to more gpios, leds, and not to mention proper programming and debugging over SWD.

Kenneth

[adrilarap]

Thanks a lot Kenneth. I had tried those steps and maybe I just misunderstood the lights. I do se a couple of red light blinks. However, when I select the device, I see this in my log: "Error when fetching device versions: No matching plugin found for operations to execute (Origin: "Error when starting operation: mcu-state-set"). I thought it had to do with boot mode, but maybe it's a completely different problem?

Thanks for the DK recommendation!

[Vidar Berg]

As Kenneth pointed out, this is a third-party dongle. The method of programming this dongle depends on the type of bootloader it came pre-programmed with. Please refer to this page for more details: https://wiki.makerdiary.com/nrf52840-mdk-usb-dongle/programming/ 

[adrilarap]

Thank you so much, I apologize for asking in the wrong post. I was confused because it comes with a nordic chip. Sorry all and thanks a lot!

[Vidar Berg]

It's perfectly fine to ask questions about this device on the forum here. After all, it does contain a Nordic IC. I just wanted to clarify that the dongle was not made by us and it may come pre-programmed with a different bootloader that does not support programming through our Programmer app in nRF Connect for desktop.