https://devzone.nordicsemi.com/f/nordic-q-a/71728/ios-compatibility-with-dfuWe use nRF52832 and SDK 17.0.2 and the buttonless secure bootloader without bonding. I don’t understand the below issue, does that apply to our solution ? There will be custom apps for ios and android. Are there any other security or compatibility concernsen-USTelligent Community 13Wed, 17 Feb 2021 12:56:11 GMThttps://devzone.nordicsemi.com/thread/294862?ContentTypeID=1Wed, 17 Feb 2021 12:56:11 GMT137ad170-7792-4731-bb38-c0d22fbe4515:e56652d2-3f85-43c2-9bcf-be84ddf71365Vidar Berg<p>No problem. Please make sure you have the NRF_SDH_BLE_SERVICE_CHANGED option in sdk_config enabled as well. PM_SERVICE_CHANGED_ENABLED enables SC handling by the PM manager, but I&#39;m not sure if it includes a build time check to see if the characterstic is actaully included or not.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/294859?ContentTypeID=1Wed, 17 Feb 2021 12:50:09 GMT137ad170-7792-4731-bb38-c0d22fbe4515:0b94992c-10bd-42ed-8f34-3dabed67a12dsjerlhagen<p>Yes, I have&nbsp;PM_SERVICE_CHANGED_ENABLED 1 in the sdk_config.h of my application. Thanks for this tip.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/294841?ContentTypeID=1Wed, 17 Feb 2021 12:27:42 GMT137ad170-7792-4731-bb38-c0d22fbe4515:95a074d7-6206-4707-b6f1-d44084fedf6fVidar Berg<p>Hello,</p> <p>It is referring to our legacy DFU solution (pre-SDK 12.x.x), not the secure DFU implementation used in SDK 17.0.2. So, you should not be impacted by this issue.&nbsp;</p> <p>Have you enabled the service changed characteristic in your application. This will be needed to force a service discovery if you ever need to change the attribute table layout on your device. E.g. if you add a new BLE service in a future update.</p><div style="clear:both;"></div>