https://devzone.nordicsemi.com/f/nordic-q-a/90193/how-to-erase-adafruit-feather-nrf52-bluefruit-leHello, I have been working with Adafruit Feather nRF52 Bluefruit LE for my project, I have two of these modules. Recently, while I uploaded code into it and push the reset button suddenly code stopped working and Red led goes in Dimmer Loop code.en-USTelligent Community 13Wed, 20 Jul 2022 12:20:41 GMThttps://devzone.nordicsemi.com/thread/377854?ContentTypeID=1Wed, 20 Jul 2022 12:20:41 GMT137ad170-7792-4731-bb38-c0d22fbe4515:42b0e06a-7141-4ff8-8b50-30838957ea85Kenneth<p>I beleve Adafruit are using a bootlaoder they have developed for programming, you need to contact them on this topic. Alternatively you can get an nRF52-DK where you can program and debug using the j-link interface.</p> <p>Kenneth</p><div style="clear:both;"></div>