https://devzone.nordicsemi.com/f/nordic-q-a/5466/how-to-reflash-un-brick-my-nrf-dkHi all, I have an nRF-DK (the new one that&#39;s mbed compatible: developer.mbed.org/.../) I have managed to completely brick it by copying the wrong file onto the BOOTLOADER volume (the one that mounts when you power-on while holding the reset buttonen-USTelligent Community 13Mon, 09 Feb 2015 12:38:12 GMThttps://devzone.nordicsemi.com/thread/19077?ContentTypeID=1Mon, 09 Feb 2015 12:38:12 GMT137ad170-7792-4731-bb38-c0d22fbe4515:2cf97904-7c49-42fa-94cf-7f5127d4a1aeHung Bui<p>Hi Mark,</p> <p>It&#39;s pretty strange that you managed to brick the board.</p> <p>Could you send us the binary file that caused the issue so we can test here ?</p> <p>If the bootloader is really corrupted, you can try to directly erase and program the ATMEL chip using a Segger Jlink programmer via JTAG connection. You may need to use the <a href="https://www.segger.com/jlink-needle-adapter.html">Jlink Needle adapter</a> to connect to the connector right under the mbed logo.</p> <p>Then program the chip using the provided binary files for Segger and mbed.</p><div style="clear:both;"></div>