Nrf52840 Dongle

[DPJONES]

Hi

This is the first time I have tried to use the nrf52840 dongle and nrf connect, when I plug in the dongle I can see it under device drivers and when I start  Bluetooth Low Energy (nrf connect)

I can see the dongle but when I click start scan it said device must be programmed I click Yes and  I get,     failed to write to target device: async task failed for id 6707676560. Can anyone please help?.

[Marte Myrvold]

Hi,

The Dongle must be in bootloader mode in order to program it. You can make it enter bootloader mode by pressing the reset button. The LED will start blinking red when it has entered bootloader mode and is ready to be programmed. See nRF52840 Dongle > Programming for more information.

Best regards,

Marte

[DPJONES]

Hi Marte

It seem that the programmer does not work either please see my other case 

 https://devzone.nordicsemi.com/f/nordic-q-a/84405/programmer-v2-3-1

Kind Regards

David

[Marte Myrvold]

Hi David,

It seems like the underlying issue is the same. The apps in nRF Connect for Desktop use the same libraries to interact and communicate with devices. Please try updating nRF Connect for Desktop to v3.10 as Simon suggested in your other case, and make sure to update JLink to v7.58b as well if it is not automatically updated with nRF Connect for Desktop.

Since the issue is most likely the same, I will let Simon handle it in your other case, so as not to have duplicate tickets about the same issue. If you still have problems with the Bluetooth Low Energy app after the problem with the Programmer app has been solved, please let me know.

Best regards,

Marte

[DPJONES]

Thank you for your help

[kidominox]

Hi，

I met the same problem with you. But I am stil confused after browsing your conversations.Did you solve the problem? If yes, could you give me a reply about the solution?Thanks a lot!

Best regards,

Kidominox