https://test-devzone.nordicsemi.com/f/nordic-q-a/88613/secure-programming-of-hex-file-at-external-manufacturing-companyHi All, We are developing firmware for our product that is manufactured by an external manufacturing company. During production the manufacturer will need to program the firmware to the product and test it. The firmware will be programmed usingen-USTelligent Community 13 Non-ProductionTue, 07 Jun 2022 12:44:12 GMThttps://test-devzone.nordicsemi.com/thread/371149?ContentTypeID=1Tue, 07 Jun 2022 12:44:12 GMT137ad170-7792-4731-bb38-c0d22fbe4515:29dcaeef-04eb-4e38-a9ee-248cc7777f71user106736<p>Hi</p> <p>We have no way to program our chips in with encrypted firmware, it needs to be readable by the chip.</p> <p>Therefore, you need to trust the party who program the chip the first time.</p> <p>Regards,<br />Sigurd Hellesvik</p><div style="clear:both;"></div>