https://devzone.nordicsemi.com/f/nordic-q-a/95172/loading-firmware-during-manufacturingWe have an old product that uses NRF52832 and we&#39;re building new units. Some of the documentations are not clear and I have the following question: What files do we need to load the firmware onto the chip before manufacturing? These are the filesen-USTelligent Community 13Tue, 27 Dec 2022 12:30:56 GMThttps://devzone.nordicsemi.com/thread/402269?ContentTypeID=1Tue, 27 Dec 2022 12:30:56 GMT137ad170-7792-4731-bb38-c0d22fbe4515:7b004131-121c-4deb-b099-06e28e7a0e4dVidar Berg<p>Hello,</p> <p>For production you will usually have one or more *.hex files which contain the FW image(s) for the device. But the files you&nbsp;listed are from a DFU update package&nbsp;and will not include&nbsp;all the data needed for the initial programming of the device, unfortunately.</p> <p>DFU packages are&nbsp;made to&nbsp;be distributed to end users to allow them to update FW on the device over Bluetooth or Serial (USB/UART), but not for programming in production.</p> <p></p> [quote user=""]What files do we need to load the firmware onto the chip before manufacturing?&nbsp;[/quote][quote user=""]I am not sure what the manufacturer is using to burn the firmware.&nbsp;[/quote] <p>If the manufacturer is already doing the programming of your FW in production,&nbsp;is it necessary to do any pre-programming?&nbsp;</p> <p>Best regards,</p> <p>Vidar</p><div style="clear:both;"></div>