https://devzone.nordicsemi.com/f/nordic-q-a/56369/how-to-read-dfu-packet-from-external-flashI have nRF52832 chip on my PCB and their is one external flash which is connected to nRF52832 through SPI. i need to read new DFU packet from the external flash and send to peer device. So, is their any function which reads the DFU packet from theen-USTelligent Community 13Thu, 09 Jan 2020 12:44:04 GMThttps://devzone.nordicsemi.com/thread/228348?ContentTypeID=1Thu, 09 Jan 2020 12:44:04 GMT137ad170-7792-4731-bb38-c0d22fbe4515:77bb2a1a-b41d-4da3-a99c-ada0d4a20076Hung Bui<p>Hi Amit,&nbsp;</p> <p>We don&#39;t have an example that does what you described. We do have NRF52 firmware to work as the BLE bootloader to receive image from a master. But we don&#39;t have an example for a BLE DFU master on a nRF52.&nbsp;</p> <p><br />I afraid that you would need to develop your application from scratch. Following is the documentation and material that you can use to develop your project:</p> <p>- DFU protocol:&nbsp;<a href="https://infocenter.nordicsemi.com/topic/sdk_nrf5_v16.0.0/lib_dfu_transport_ble.html?cp=7_1_3_5_2_2">https://infocenter.nordicsemi.com/topic/sdk_nrf5_v16.0.0/lib_dfu_transport_ble.html?cp=7_1_3_5_2_2</a></p> <p>- UART DFU master example :&nbsp;<a href="https://devzone.nordicsemi.com/nordic/nordic-blog/b/blog/posts/getting-started-with-nordics-secure-dfu-bootloader#h108sjziaxo3m81rkgr1has5r1d72qtu">https://devzone.nordicsemi.com/nordic/nordic-blog/b/blog/posts/getting-started-with-nordics-secure-dfu-bootloader#h108sjziaxo3m81rkgr1has5r1d72qtu</a></p> <p>- BLE DFU master code for Android, iOS , Windows in nRF Toolbox app, and in nRFConnect on Desktop.<br /><br /></p><div style="clear:both;"></div>