How to use security dfu in apphttps://devzone.nordicsemi.com/f/nordic-q-a/15793/how-to-use-security-dfu-in-appI used the example in nRF51_SDK_9.0.0_2e23562\examples\dfu\experimental, the first time that work well. But when I want to update a app in app(with dfu function),it failed. (When I use normal dfu ,both work well) The nRFConnect-4.3.2.apk tool show debugen-USTelligent Community 13Wed, 24 Aug 2016 11:39:39 GMTRE: How to use security dfu in apphttps://devzone.nordicsemi.com/thread/60267?ContentTypeID=1Wed, 24 Aug 2016 11:39:39 GMT137ad170-7792-4731-bb38-c0d22fbe4515:42c88f5f-d58a-4ce5-9e63-7d9ab9a3e73csun<p>I&#39;m sorry ,my english is pool . I just want to use RF51_SDK_9.0.0_2e23562\examples\dfu\experimental and ble_app_hrs_s110_with_dfu_pca10028。 then the problem is that I used a wdt， wdt not be feeded in dfu，so 。。。</p><div style="clear:both;"></div>RE: How to use security dfu in apphttps://devzone.nordicsemi.com/thread/60263?ContentTypeID=1Fri, 19 Aug 2016 02:13:20 GMT137ad170-7792-4731-bb38-c0d22fbe4515:fe830bca-004c-4520-a52c-d1846b416460sun<p>enter code here</p><div style="clear:both;"></div>RE: How to use security dfu in apphttps://devzone.nordicsemi.com/thread/60266?ContentTypeID=1Thu, 18 Aug 2016 13:35:06 GMT137ad170-7792-4731-bb38-c0d22fbe4515:ffc3f905-03c7-4dff-b0a4-3c873cc2b922Petter Myhre<p>Could you explain a bit more about what you have done and what you want to achieve? What SoftDevice are you using? You flash the SoftDevice and a bootloader, then you do DFU with which application? Then you do DFU again? With what application?</p><div style="clear:both;"></div>RE: How to use security dfu in apphttps://devzone.nordicsemi.com/thread/60264?ContentTypeID=1Thu, 18 Aug 2016 11:20:11 GMT137ad170-7792-4731-bb38-c0d22fbe4515:d4cad0c7-f5ae-4e22-8ef9-63f0f1dc3ca5sun<p>That is app with dfu function (like ble_app_hrs_s110_with_dfu_pca10028 project).I know the problem maybe on my app. thanks！</p><div style="clear:both;"></div>RE: How to use security dfu in apphttps://devzone.nordicsemi.com/thread/60265?ContentTypeID=1Thu, 18 Aug 2016 10:22:23 GMT137ad170-7792-4731-bb38-c0d22fbe4515:6b7d3aca-18ac-4f16-aaf6-c4c6b2c425eaPetter Myhre<p>What do you mean by update a app in app? Could you explain a bit more about what you have done and what you want to achieve?</p><div style="clear:both;"></div>