https://devzone.nordicsemi.com/f/nordic-q-a/79628/jlink-can-no-longer-program-nrf52832-used-to-be-able-toWe are encountering a very strange situation. We have two custom PCBs (PCB1 and PCB2) both with an NRF52832. We were able to program both PCBs (multiple times) with the JLink Ultra+, JLink EDU and Jlink EDU Mini without any issues, until recently (quiteen-USTelligent Community 13Tue, 14 Sep 2021 11:49:15 GMThttps://devzone.nordicsemi.com/thread/329422?ContentTypeID=1Tue, 14 Sep 2021 11:49:15 GMT137ad170-7792-4731-bb38-c0d22fbe4515:aa3d7baa-c733-4eab-8063-5359fadbac2eKenneth<p>Looking at the comparison sheet between the programmers:<br /><a href="https://www.segger.com/products/debug-probes/j-link/models/model-overview/">https://www.segger.com/products/debug-probes/j-link/models/model-overview/</a></p> <p>I can find that the j-link mini edu is fixed 3.3V only, is it possible that the voltage is lower than 3.3V for PCB1?</p> <p>For PCB2, maybe some problems with power supply there also? Is it above 1.7V?</p> <p>Kenneth</p><div style="clear:both;"></div>