https://devzone.nordicsemi.com/f/nordic-q-a/9176/upgrade-app-from-previous-to-newer-sdkHi, I have already developed (and almost finished) an application with SDK 8.1.1 As you now when I created the application starting from an SDK example, the project under Keil has reference to some C and H files under the Nordic pack directory (underen-USTelligent Community 13Fri, 25 Sep 2015 10:48:57 GMThttps://devzone.nordicsemi.com/thread/33813?ContentTypeID=1Fri, 25 Sep 2015 10:48:57 GMT137ad170-7792-4731-bb38-c0d22fbe4515:141d8274-af85-4f9a-a91b-8d5d4cc5a888ppatierno<p>My question is strictly related on how to update the Nordic provided file copied inside my project (ex. app_button.c, app_timer.c implementation if they changed in SDK 9.0.0) or change the references to locked file (ex. device_manager_peripheral.c). Do I have to execute it by hand ?</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/33812?ContentTypeID=1Fri, 11 Sep 2015 15:22:43 GMT137ad170-7792-4731-bb38-c0d22fbe4515:29cc0289-8903-4754-a075-830ae0cd00b7Stefan Birnir Sverrisson<p>Hi</p> <p>For our recommendation for packs, see <a href="https://devzone.nordicsemi.com/question/32622/configuring-software-pack-libraries-in-keil/?answer=33194#post-id-33194">this thread</a></p> <p>When upgrading to a new major nRF51 SDK version, look at the comments on <a href="https://devzone.nordicsemi.com/question/33758/sdk-vs-softdevice-compatibility/?answer=33969#post-id-33969">this thread</a> from april 13th.</p><div style="clear:both;"></div>