https://devzone.nordicsemi.com/f/nordic-q-a/54341/missing-devicefamilypack-in-pack-installerHello, we are developing a BLE application using SDK 5.2 and softdevice 6.2.1 (we are aware this is old, but we still have to support it). We actually use Keil IDE 5.10 to do our development on this project. I have to switch to a new laptop and haveen-USTelligent Community 13Thu, 14 Nov 2019 14:00:06 GMThttps://devzone.nordicsemi.com/thread/220091?ContentTypeID=1Thu, 14 Nov 2019 14:00:06 GMT137ad170-7792-4731-bb38-c0d22fbe4515:2e4d8a8a-20bc-4307-bbed-4b3db209acb8Kenneth<p>I assume you may download it from here:&nbsp;<a href="http://developer.nordicsemi.com/nRF5_SDK/pieces/nRF_DeviceFamilyPack/">http://developer.nordicsemi.com/nRF5_SDK/pieces/nRF_DeviceFamilyPack/</a>&nbsp;, then in Keil click &quot;Pack Installer&quot; button and select File-&gt;Import.</p> <p>You may not need to do this if the project already have the arm_startup*.s and system_nrf*.c, and if the project compiles fine.</p><div style="clear:both;"></div>