https://devzone.nordicsemi.com/f/nordic-q-a/42281/firmware-update-through-host-micro-controller-uartHi, What would be the procedure for updating the firmware of device through another host micro controller UART? (Not with PC tools like nrf go studio, nrf connect, nrf jprog and nrf util) Thanks, Sridhar.en-USTelligent Community 13Wed, 06 Feb 2019 11:40:01 GMThttps://devzone.nordicsemi.com/thread/169699?ContentTypeID=1Wed, 06 Feb 2019 11:40:01 GMT137ad170-7792-4731-bb38-c0d22fbe4515:8e6e049c-f842-4f9f-8d3b-7b5a82f39759sridharnaidu<p>Thanks for the info</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/164729?ContentTypeID=1Wed, 09 Jan 2019 14:02:27 GMT137ad170-7792-4731-bb38-c0d22fbe4515:bbb7d1bf-77c6-4bd2-b2c1-ba8008dc8954Hung Bui<p>Hi,</p> <p></p> <p>The best way is to follow the description of the protocol in our SDK documentation:&nbsp;<a href="https://www.nordicsemi.com/DocLib/Content/SDK_Doc/nRF5_SDK/v15-2-0/lib_dfu_transport">https://www.nordicsemi.com/DocLib/Content/SDK_Doc/nRF5_SDK/v15-2-0/lib_dfu_transport</a></p> <p>And the serial transport protocol:&nbsp;<a href="https://www.nordicsemi.com/DocLib/Content/SDK_Doc/nRF5_SDK/v15-2-0/lib_dfu_transport_serial">https://www.nordicsemi.com/DocLib/Content/SDK_Doc/nRF5_SDK/v15-2-0/lib_dfu_transport_serial</a></p> <p></p> <p>It&#39;s actually not so difficult to make a DFU master. I attached here my project for DFU UART master on SDK v14.2 for your reference (the documentation is for SPI but it work the same for UART) . Please be aware that the project provided as-is.&nbsp;</p> <p><a href="https://devzone.nordicsemi.com/cfs-file/__key/support-attachments/beef5d1b77644c448dabff31668f3a47-ae61f88358704b5b978ed335789f911b/DFUMaster_5F00_UART.zip">devzone.nordicsemi.com/.../DFUMaster_5F00_UART.zip</a></p><div style="clear:both;"></div>