https://devzone.nordicsemi.com/f/nordic-q-a/74907/mistakenly-flashed-my-ppkiiI inadvertently flashed my PPKII while trying to flash a 52840 Dongle. Now my computer doesn&#39;t recognize the PPKII when I plug it into the USB (PPK does not light up). I&#39;ve tried several different USB cables to no avail. On another thread I saw someoneen-USTelligent Community 13Sat, 08 May 2021 19:27:49 GMThttps://devzone.nordicsemi.com/thread/308830?ContentTypeID=1Sat, 08 May 2021 19:27:49 GMT137ad170-7792-4731-bb38-c0d22fbe4515:3a80315e-a89d-4e22-acb8-834774f9d734hmolesworth<p>Don&#39;t remember where I found this, but this does what you need if I recall:</p> <p><em><strong>PPK2 (PPKII PPK-II) Recovery</strong></em></p> <ul> <li>Disconnect all other Nordic devices from the computer, turn off the kit and remove it from the plastic by removing the four screws</li> <li>Insert USB to J2 (USB DATA/POWER)</li> <li>Short a connection between GND (e.g on the four pin power output header) to TP34 on the PPK2</li> <li>While holding the jumper cable, turn the kit on and remove the jumper</li> <li>Now the PPK2 should be in bootloader again</li> <li>Open the PPK app, and select the device which is now just a serial number</li> <li>When selecting it, the user will be prompted to re-program the application</li> </ul> <p>Edit: I found info was from Oyvind here&nbsp;<a href="https://devzone.nordicsemi.com/f/nordic-q-a/70266/ppk2-suddenly-stopped-working/288365#288365">ppk2-suddenly-stopped-working</a></p><div style="clear:both;"></div>