https://devzone.nordicsemi.com/f/nordic-q-a/2092/over-the-air-update---nrf51822-custom-boards-from-evaluation-kitHi, I have an evaluation kit and I have custom boards that has nRF51822 chip on them. I am trying to update the firmware(Application) of the custom boards from evaluation kit. Is this possible? Could you let me know what is procedure. Thanksen-USTelligent Community 13Thu, 03 Apr 2014 18:25:41 GMThttps://devzone.nordicsemi.com/thread/8956?ContentTypeID=1Thu, 03 Apr 2014 18:25:41 GMT137ad170-7792-4731-bb38-c0d22fbe4515:21850c57-a07e-4e43-b444-325806c45070Audun<p>HI Arjun,</p> <p>yes, it is definitely possible. But I don&#39;t think we have such an example available at this time.</p> <p>You can use the S120 Central Stack on the evaluation kit and implement the Central-side of the Over-The-Air firmware update. Essentially porting the nRFToolbox Android application functionality to nRF51822 firmware.</p> <p>Alternatively, if you are OK with a wired firmware update, you can implement the Host-side of the serial transport layer (<a href="https://devzone.nordicsemi.com/documentation/nrf51/5.2.0/html/a00026.html)">devzone.nordicsemi.com/.../a00026.html)</a>. This would be simpler than implementing the Central side OTA application.</p> <p>Audun</p><div style="clear:both;"></div>