https://devzone.nordicsemi.com/f/nordic-q-a/18609/dfu-with-encrypted-connection-sdk-11-stuck-in-dfu_ble_svc_peer_data_setHi I am using sdk 11 and adding DFU to my application My application always stuck at dfu_ble_svc_peer_data_set(&amp;m_peer_data); in function &#39;static void dfu_app_peer_data_set(uint16_t conn_handle)&#39; Before asking a question I already saw this pageen-USTelligent Community 13Wed, 28 Dec 2016 14:58:20 GMThttps://devzone.nordicsemi.com/thread/71841?ContentTypeID=1Wed, 28 Dec 2016 14:58:20 GMT137ad170-7792-4731-bb38-c0d22fbe4515:abe510e3-4723-4642-a1fc-74af9f317f4cHung Bui<p>Hi kibo,</p> <p>I assume you followed all the steps <a href="http://infocenter.nordicsemi.com/topic/com.nordic.infocenter.sdk5.v11.0.0/bledfu_appextending.html?cp=4_0_3_4_3_1_2_1">here</a> ?</p> <p>In the bootloader have you made sure you setup IRAM2 from 0x20007F80 size 0x80 and tick NoInit (if you are using KEIL)</p> <p>You can try to add DFU service into one of our example, such as the proximity example, to reproduce the issue, and then send me your project so I can test here.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/71840?ContentTypeID=1Wed, 28 Dec 2016 14:37:25 GMT137ad170-7792-4731-bb38-c0d22fbe4515:9246ae02-66f1-4097-acdf-40b91bd46eeekibo<p>I printed all ble_event with RTT Viewer. I used SEGGER_RTT_printf function to print event id in ble_evt_dispatch function Here are my application&#39;s BLE event steps. 0x10 0x14 0x13 0x12 0x1A 0x30 0x19 0x12 0x50 0x50 0x50 0x51 I am not sure this information is helpful.</p> <p>And sometimes my application stuck at dfu_ble_svc_peer_data_set function or GATT Error is occurred.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/71839?ContentTypeID=1Wed, 28 Dec 2016 14:07:29 GMT137ad170-7792-4731-bb38-c0d22fbe4515:776ae43d-518c-462e-b953-80dfd4b34579kibo<p>Yes, I tried ble_app_hrs with DFUexample. It works well. I use SAMSUNG GALAXY Note 5 and nRF Toolbox Here are my steps. Select my device and zip file then, press UPLOAD button</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/71838?ContentTypeID=1Wed, 28 Dec 2016 10:51:41 GMT137ad170-7792-4731-bb38-c0d22fbe4515:93cf4712-364a-4720-a9f5-f056f52f2f88Hung Bui<p>Have you tried to test with the buttonless application ble_app_hrs_with_dfu in our SDK ? Could you state the steps you do when testing? start with programming the softdevice.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/71837?ContentTypeID=1Wed, 28 Dec 2016 10:48:22 GMT137ad170-7792-4731-bb38-c0d22fbe4515:3c5da111-c937-4ca1-966a-0f0acaec654dkibo<p>Yes, I use device manager. I use device_manager_peripheral.c file And I checked that dfu_ble_svc_peer_data_set function is in bootloader</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/71836?ContentTypeID=1Wed, 28 Dec 2016 10:31:28 GMT137ad170-7792-4731-bb38-c0d22fbe4515:d8e2955c-d963-498a-ac07-34bc44da3d8bHung Bui<p>Hi kibo,</p> <p>Have you flashed the bootloader ? And in the bootloader the SVC call for dfu_ble_svc_peer_data_set is declared (as in our bootloader example).</p> <p>Do you use device manager in your application ?</p><div style="clear:both;"></div>