https://devzone.nordicsemi.com/f/nordic-q-a/71000/nrf52810-dfu-via-an-embedded-hostHi! I&#39;m trying to understand the possibility of doing a FW update to an empty NRF52810 chip via a host MCU running Linux. We have this setup on a custom PCB, whereas the host and the NRF52810 chips are connected via SPI and UART. We are considering creatingen-USTelligent Community 13Thu, 28 Jan 2021 09:51:34 GMThttps://devzone.nordicsemi.com/thread/291726?ContentTypeID=1Thu, 28 Jan 2021 09:51:34 GMT137ad170-7792-4731-bb38-c0d22fbe4515:ced6e218-e9bf-46c7-a55f-99f9f69482cdmxhll<p>I&#39;m new to the nRF world so I can only give hints and not a qualified answer:</p> <p>-528xx&nbsp;devices use SWD, not JTAG.</p> <p>-afaik there is no default bootloader preinstalled&nbsp;</p> <p></p> <p>Approaches may be:</p> <p>-Using a preprogramming service to flash a suitable bootloader before the Chip/Module is placed on the PCB.</p> <p>-<a href="https://www.segger.com/products/debug-probes/j-link/models/j-link-ob/">Ask Segger for a quote on a embedded J-LINK On-Board programmer&nbsp;</a></p> <p>-Expose the SWD headers and build a jig to program the bootloader at the PCB assembly service (Why did you exclude that option?)</p><div style="clear:both;"></div>