https://devzone.nordicsemi.com/f/nordic-q-a/8196/does-experimental-dfu-application-use-the-actual-boot-loaderHi I have been reading a lot of posts and the documentation on DFU for SDK7.2, but something is not really clear to me. When I compile and program the boot loader in my device (and also programmed the S110 soft device), I was able to update the firmwareen-USTelligent Community 13Thu, 16 Jul 2015 08:32:13 GMThttps://devzone.nordicsemi.com/thread/29484?ContentTypeID=1Thu, 16 Jul 2015 08:32:13 GMT137ad170-7792-4731-bb38-c0d22fbe4515:5d28bc4d-e600-42ef-9f34-86dec0de2b7aHung Bui<p>@wim: You still need to flash the bootloader in place.</p> <p>What we do in the experimental button less project is only to START the bootloader from the application via a characteristic that you can set using your phone, exactly like what you described.</p> <p>You can have a look at question C in this <a href="https://devzone.nordicsemi.com/blogs/685/common-faq-on-dfu/">FAQ</a>.</p><div style="clear:both;"></div>