https://devzone.nordicsemi.com/f/nordic-q-a/50410/can-t-find-dfu-bootloader_secure_ble-folderHi everyone, SDK version: 15.3.0 I read the DFU documentation and can&#39;t find the &lt;InstallFolder&gt;\examples\dfu\bootloader_secure_ble folder in SDK 15.0.3. This folder isn&#39;t in the SDK at all. What can I use as bootloader_secure_ble exampleen-USTelligent Community 13Tue, 30 Jul 2019 11:43:57 GMThttps://devzone.nordicsemi.com/thread/201219?ContentTypeID=1Tue, 30 Jul 2019 11:43:57 GMT137ad170-7792-4731-bb38-c0d22fbe4515:482f5a68-e9a0-4532-aebd-f90a1a2f1b52bjorn-spockeli<p>Hi Louis,&nbsp;</p> <p>there is a&nbsp;examples\dfu\bootloader_secure folder in SDK 15.3.0, it is present in the SDK you can download here:&nbsp;<a href="http://developer.nordicsemi.com/nRF5_SDK/nRF5_SDK_v15.x.x/nRF5_SDK_15.3.0_59ac345.zip">nRF5_SDK_15.3.0_59ac345.zip</a></p> <p>If you want the BLE bootlaoder for the nRF52832 DK, then navigate to&nbsp;nRF5_SDK_15.3.0_59ac345\examples\dfu\secure_bootloader\pca10040_ble and then choose the preferred toolchain, e.g. Keil, GCC or Segger Embedded Studio(ses).</p> <p>Best regards</p> <p>Bj&oslash;rn</p><div style="clear:both;"></div>