nRF9160 DK not detected as J-Link, COM ports unresponsive, cannot program modem firmware

RE: nRF9160 DK not detected as J-Link, COM ports unresponsive, cannot program modem firmware

Håkon Alseth — Tue, 12 Aug 2025 07:15:32 GMT

Hi Leo,

Could you try opening the COM port with a generic terminal program, like putty/realterm/teraterm/nRF serial ?

Then issue "AT" and see if you get "OK" back?

Kind regards,

Håkon

RE: nRF9160 DK not detected as J-Link, COM ports unresponsive, cannot program modem firmware

leo_lu — Tue, 12 Aug 2025 01:55:06 GMT

Hi Håkon,

I flashed the "at_client".hex file, but the same issue still exists.
In Quick Start, after I programmed AT Commands, I cannot successfully pass the verification
However, I can successfully verify after programming the Shell command Line Interface.
How can I fixed the issue.

Regards,
Leo

RE: nRF9160 DK not detected as J-Link, COM ports unresponsive, cannot program modem firmware

Håkon Alseth — Mon, 11 Aug 2025 07:45:43 GMT

Hi Leo,

If you want to issue AT commands, you can flash the "at_client" .hex file and issue your wanted commands via for instance the nRF serial terminal.

Kind regards,

Håkon

RE: nRF9160 DK not detected as J-Link, COM ports unresponsive, cannot program modem firmware

leo_lu — Mon, 11 Aug 2025 02:24:25 GMT

Hi Håkon,

Thank you for your reply! Could you please let me know which .hex files I should use with Programmer to erase and write?

Regards,
Leo

RE: nRF9160 DK not detected as J-Link, COM ports unresponsive, cannot program modem firmware

Håkon Alseth — Fri, 08 Aug 2025 12:28:15 GMT

Hi Leo,

I would recommend that you first update the modem and in addition, you can use the precompiled .hex files found here:

https://www.nordicsemi.com/Products/Development-hardware/nRF9160-DK/Download?lang=en#infotabs

Kind regards,

Håkon

RE: nRF9160 DK not detected as J-Link, COM ports unresponsive, cannot program modem firmware

leo_lu — Fri, 08 Aug 2025 06:02:27 GMT

Hi Håkon,
I was able to connect to Cat-M and NB-IoT that day, but now I face with verification fail and cannot use at command, I don't know what's the problem.

Regards,
Leo

RE: nRF9160 DK not detected as J-Link, COM ports unresponsive, cannot program modem firmware

Håkon Alseth — Wed, 06 Aug 2025 08:10:44 GMT

Hi Leo,

We are always happy to help out.

I am so glad to hear that this worked. I hope you have a wonderful day!

Kind regards,

Håkon

RE: nRF9160 DK not detected as J-Link, COM ports unresponsive, cannot program modem firmware

leo_lu — Wed, 06 Aug 2025 07:37:42 GMT

Hi Håkon,

I checked the box you mentioned and reinstalled the driver. Now I can see the J-Link driver in Device Manager. Thank you very much! I'll stay in touch and reach out if I have any further questions. Thanks again!

Regards
Leo

RE: nRF9160 DK not detected as J-Link, COM ports unresponsive, cannot program modem firmware

Håkon Alseth — Wed, 06 Aug 2025 07:24:49 GMT

Hi,

When you install the jlink driver, could you ensure that you check the legacy driver installation box?

Kind regards,

Håkon