https://devzone.nordicsemi.com/f/nordic-q-a/50939/migration-to-sdk-12-3Good afternoon, At the place I&#39;m working there&#39;s 2 main projects using the nordic SDK, while one runs on the 12.3 version, the other is very outdated and still runs on the 6.1 SDK (softdevice 7.3.0) with a nRF51422_xxaa I&#39;m currently in chargeen-USTelligent Community 13Tue, 13 Aug 2019 13:51:08 GMThttps://devzone.nordicsemi.com/thread/203859?ContentTypeID=1Tue, 13 Aug 2019 13:51:08 GMT137ad170-7792-4731-bb38-c0d22fbe4515:2ca0f80b-cf1f-48d0-b852-eec5c9ce3cc0Jimmy Wong<p>HI,<br /><br />I did the example of the nRF51822 with SDK12.3 (S130v2.0.1).</p> <p><a href="https://github.com/jimmywong2003/SES-Project-For-NRF51/tree/master/ble_app_uart_bas_baseline">https://github.com/jimmywong2003/SES-Project-For-NRF51/tree/master/ble_app_uart_bas_baseline</a></p> <p>this is the Bluetooth 4.2 version.</p> <p>You can move your own own on this baseline for porting.</p><div style="clear:both;"></div>