https://devzone.nordicsemi.com/f/nordic-q-a/3299/update-nrf51822-firmware-from-serial-flashI am looking at using the nRF51822 in an application to create an Ethernet gateway and want to be able to download new firmware to the nRF51822 from a remote server. I plan to have serial flash available if needed to store a new image. The nRF51822 woulden-USTelligent Community 13Wed, 30 Jul 2014 12:41:13 GMThttps://devzone.nordicsemi.com/thread/12029?ContentTypeID=1Wed, 30 Jul 2014 12:41:13 GMT137ad170-7792-4731-bb38-c0d22fbe4515:ae403f44-b437-43bb-8355-9d7eda544b45cocoa<p>An idea ..., connect nRF51 to an Host mcu connected to an Ethernet Controller IC.</p> <p>Host mcu receives the firmware and could act as serial port for nRF51 in dfu serial mode.</p> <p><img src="https://devzone.nordicsemi.com/cfs-file/__key/communityserver-discussions-components-files/4/CP2200_5F00_BD.png" alt="image description" /></p><div style="clear:both;"></div>