https://devzone.nordicsemi.com/f/nordic-q-a/60830/received-a-fault-during-dfu-from-central-to-peripheralI&#39;m studying to perform DFU Peripheral from Central both using nRF52840, I&#39;m able to issue command to let Peripheral into DFU mode, but got a &quot;Received a fault&quot; message in RTT log when start sending &quot;0x08&quot; data, below is the log: 00&gt; &lt;debug&gt; nrf_dfu_req_handleren-USTelligent Community 13Wed, 29 Apr 2020 11:29:48 GMThttps://devzone.nordicsemi.com/thread/247311?ContentTypeID=1Wed, 29 Apr 2020 11:29:48 GMT137ad170-7792-4731-bb38-c0d22fbe4515:fca34a36-e5f7-49e6-839d-2533cb35ca1dVidar Berg<p>Hello Kevin,</p> <p>Are you passing the <a href="https://infocenter.nordicsemi.com/topic/sdk_nrf5_v16.0.0/structnrf__dfu__request__create__t.html#aaa6dd8deb8bbace2612691378a8fcb96">Object type</a> and <a href="https://infocenter.nordicsemi.com/topic/sdk_nrf5_v16.0.0/structnrf__dfu__request__create__t.html#a1344c939ab2f9b9f9e4e1c484434ed24">Object size</a> when requesting &quot;<a href="https://infocenter.nordicsemi.com/topic/sdk_nrf5_v16.0.0/lib_dfu_transport.html#lib_dfu_transport_op_create">Create</a> new object&quot;? DFU starts with the transfer of the init packet.</p> <p><span>Message sequence charts: </span></p> <p><span><a title="Transfer of an init packet" href="https://infocenter.nordicsemi.com/topic/sdk_nrf5_v16.0.0/lib_dfu_transport_ble.html?cp=7_1_3_5_2_2_3_0#lib_dfu_transport_msc_init">Transfer of an init packet</a></span></p> <p><span><a title="Transfer of a firmware image" href="https://infocenter.nordicsemi.com/topic/sdk_nrf5_v16.0.0/lib_dfu_transport_ble.html?cp=7_1_3_5_2_2_3_1#lib_dfu_transport_msc_data">Transfer of a firmware image</a></span></p><div style="clear:both;"></div>