Issue when Programming

[YDe]

Hello,

I bought 2x nRF52840 and I used the "nRF Connect for Desktop v3.11.1 to program them.  Unfortunately, after clicking on the "Write" button, the programmer reach correctly the 100% of the programming but then, it stopped with an error.  The problem now is that I cannot use them anymore since they seem not working anymore:.

Could you tell me how to recover them?  Is there any tool available to "reprogram" them with the original firmware? 

Thanks in advance for your help.

[dejans]

Hi,

What are you trying to program and to which device?

Have you tried programming both devices? Does the error during programming occur only on one device or on both devices?

Best regards,
Dejan

[YDe]

I tried to program the boards for BLE sniffer ("sniffer_nrf52840dongle_nrf2840_4.1.0.hex").  Indeed, the same error appeared while programming each of the devices.  Both of them seems not operating anymore.
Kind regards,
YDe

[dejans]

Hi,

Do you have a custom boards, nRF52840-DK or nRF52840 dongle boards?

Is there a typo when you specify sniffer_nrf52840dongle_nrf2840_4.1.0.hex instead of sniffer_nrf52840dongle_nrf52840_4.1.0.hex?

Best regards,
Dejan

[YDe]

I am using an nRF52840 dongle boards and not the nRF52840-DK:
PCA10059,
ver 1.2.0,
2020.37, 

Oh yes, there is a typo, you are right.  The one I used is indeed the "sniffer_nrf52840dongle_nrf52840_4.1.0.hex".

[YDe]

In fact, we used the nRF51 dongle to sniff the BLE but apparently, this board seems to be obsolete.  It is the reason why we tried to switch to the nRF52.  If the nRF52 dongle version is not the most appropriate, what are you suggesting to use as a successor of this "old" nRF51 dongle?  From my understanding, the nRF52840 dongle should do the job as well, shouldn't it?