Have I broken my nRF52840?

[s.dev]

Hello,

I have purchased this device to use as a BLE sniffer. I have followed this manual to configure the device as a sniffer:

https://infocenter.nordicsemi.com/pdf/nRF_Sniffer_BLE_UG_v3.1.pdf

In 2.1.3 say: Follow the instructions in Programming a Development to program the HEX file.

So I follow:

https://infocenter.nordicsemi.com/index.jsp?topic=%2Fug_nc_programmer%2FUG%2Fnrf_connect_programmer%2Fncp_programming_dongle.html&anchor=ncp_programming_dongle

I have added all the HEX files that the first instructions asked me using the instructions from the second link to write files. When I hit the "write" button, it asked me an additional piece of information that was not clarified in any instruction. It asked me for "Software version" or something similar in a dialog within the "nrfConnect" program just when hitting "write". It seems that this code is used to see if it matches the version of the code or the hawdrwade, I really don't know.

I have read somewhere that I had to put "0x00" and I have done that. I have read it in other place because the instructions did not say anything about this.
As soon as I have accepted the dialogue, the device has stopped working. The light has gone out, the "nRF connect" does not recognize device and not even windows recognize it in the device manager.

Have I broken the device? it has a solution? What should I have done in the dialogue? 

[Simonr]

Hi

First of all, the nRF52840 Dongle does not support the nRF Sniffer for BLE. This is stated in the Supported devices in the Introduction of the User Guide. You will need an nRF52840 DK or an nRF51 Dongle, which I assume you have mixed up.

Next, You have likely just accidentally erased the UICR on the Dongle or erased the production bootloader. Please follow the Recover after an accidental UICR erase section in our Dongle Programming tutorial to see if that helps you get back on track. 

Best regards,

Simon

Side note: The nRF52840 Dongle can be used as a sniffer for 802.15.4, but we don't have support for the BLE sniffer I'm afraid.