PPK2- Selected device has no serial number. Device setup is not supported.

[kc9999]

I can't connect my newly purchased PPK2 to Power Profiler V4.2.1.

The log shows:
2025-04-22T22:23:19.069Z DEBUG Sending event "ppk: running nrfutil device"
2025-04-22T22:23:19.905Z DEBUG Sending event "ppk: running nrfutil device"
2025-04-22T22:23:19.906Z DEBUG Sending event "ppk: running nrfutil device"
2025-04-22T22:23:19.909Z DEBUG Sending event "ppk: running nrfutil device"
2025-04-22T22:23:19.961Z INFO Using the bundled core version for nrfutil device: 8.0.0
2025-04-22T22:23:20.393Z INFO Using nrfutil-device version: 2.6.4
2025-04-22T22:23:20.393Z INFO Using nrf-device-lib version: 0.17.35
2025-04-22T22:23:20.393Z INFO Using nrfjprog DLL version: 10.24.2
2025-04-22T22:23:20.393Z INFO Using JLink version: JLink_V7.94i
2025-04-22T22:23:20.432Z INFO Device Connected SN:null
2025-04-22T22:23:20.433Z DEBUG Sending event "ppk: device connected"
2025-04-22T22:23:23.248Z INFO Selecting device with the serial number null
2025-04-22T22:23:23.263Z INFO Selected device with the serial number null
2025-04-22T22:23:23.263Z INFO Validating firmware for device with s/n null
2025-04-22T22:23:23.263Z WARN Selected device has no serial number. Device setup is not supported.
2025-04-22T22:23:23.264Z INFO Opening device with s/n null
2025-04-22T22:23:23.280Z DEBUG Sending event "ppk: device selected"
2025-04-22T22:24:03.773Z INFO Deselected device
2025-04-22T22:24:03.773Z INFO Deselecting device
2025-04-22T22:24:03.776Z DEBUG Sending event "ppk: device deselected "
2025-04-22T22:24:03.799Z INFO PPK closed

How to fix this? The PPK2 is from digikey.

[Øyvind]

Hello, can you please provide images of both sides of the PPk2 that you have?

Thanks.

Kind regards,
Øyvind

[kc9999]

Hi Øyvind,

Both sides of images:

Thank you,

Kevin

[Øyvind]

Hey Kevin, 

Thanks for providing these. Could you please try the following while I inquire our PPK2 experts internally:

Disconnect all other nordic devices from the computer, turn off the kit and remove it from the plastic by removing the four screws. Insert USB to J2 (USB DATA/POWER). Short a connection between GND (e.g on the four pin power output header) to TP34 on the PPK2. While holding the jumper cable, turn the kit on and remove the jumper. Now the PPK2 should be in bootloader again.

Open the PPK app, and select the device which is now just a serial number, e.g 

When selecting it, the user will be prompted to program the application and it should now be working again. 

Kind regards,
Øyvind