https://devzone.nordicsemi.com/f/nordic-q-a/17895/how-to-create-distribution-packet-zipI follow this: developer.nordicsemi.com/.../a00092.html Creating an image file The format of the firmware image that you use to update the device firmware depends on the tool that you use to perform the DFU. The DFU bootloader expects the imageen-USTelligent Community 13Thu, 02 Mar 2017 12:30:00 GMThttps://devzone.nordicsemi.com/thread/68989?ContentTypeID=1Thu, 02 Mar 2017 12:30:00 GMT137ad170-7792-4731-bb38-c0d22fbe4515:1cec9a9b-3655-4c9a-87a8-074896e7bb09FormerMember<p><a href="http://infocenter.nordicsemi.com/index.jsp?topic=%2Fcom.nordic.infocenter.sdk5.v12.2.0%2Fble_sdk_app_dfu_bootloader.html&amp;cp=4_0_1_4_3_1_2&amp;anchor=lib_dfu_image">This</a> page on the infocenter explains how to create a .zip file for DFU.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/68988?ContentTypeID=1Thu, 02 Mar 2017 12:18:39 GMT137ad170-7792-4731-bb38-c0d22fbe4515:ff9889f4-e7ae-48fd-ad19-1b9e8b36cc54luiz_campos<p>I cannot find the nrf folder inside C:\Program Files (x86)\Nordic Semiconductor\Master Control Panel&lt;version&gt;. Where can I donwload and install any recent Master Control Panel to try and fix this? Thanks</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/68987?ContentTypeID=1Tue, 22 Nov 2016 07:36:15 GMT137ad170-7792-4731-bb38-c0d22fbe4515:ebe406cf-7947-4451-9f82-fc2149ebc287FormerMember<p>Which version of the SDK do you use? SDK 8? Or the latest version, SDK 12.1.0?</p><div style="clear:both;"></div>