Reprogram Firmware on Power Profiler Kit II

RE: Reprogram Firmware on Power Profiler Kit II

Qi-Yang — Tue, 03 Feb 2026 02:37:37 GMT

Tanks,it worked.

RE: Reprogram Firmware on Power Profiler Kit II

whati001 — Sat, 16 Dec 2023 15:29:09 GMT

Thank you very much the solution was perfect.

RE: Reprogram Firmware on Power Profiler Kit II

tremmert — Thu, 11 May 2023 22:04:56 GMT

After running through these procedures, the PPK will begin a slow red LED "breathing" sequence. However, no serial device is available in the PP software v3.5.5

In device manager, I do see "nRF52 SDFU USB (Com21)"

RE: Reprogram Firmware on Power Profiler Kit II

AzConnect — Wed, 30 Mar 2022 14:58:23 GMT

Thanks it's good for me !

RE: Reprogram Firmware on Power Profiler Kit II

mujeeb — Thu, 27 May 2021 16:32:43 GMT

Thanks, it worked perfectly.

RE: Reprogram Firmware on Power Profiler Kit II

Stian Røed Hafskjold — Thu, 27 May 2021 13:59:35 GMT

Hi, can you try what Øyvind suggests here: https://devzone.nordicsemi.com/f/nordic-q-a/75163/ppk2-not-turning-on/309793

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.

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