I have been using Power Profiler Kit nRF6707 for awhile without problem. If I made a mistake by downloading firmware when the PPK is attached to nRF52 DK, the software on the PPK is wiped out. However, I simply just needed to drag ppk_v1_0_0.hex to JLINK Drive to re-flash PPK.
Now I made accidentally program the PPK again but this method does not work. The LED on PPK is always off. Are there anyways to solve this?