When the production test is complete, the Nordic-proprietary %XPRODDONE AT command can be run. After the command runs, nRF9160 rejects the programming of older firmware versions and versions with a smaller version number. AT command support for the RF test can also be disabled. For critical information, see Customer production done %XPRODDONE in nRF91 AT Commands Reference Guide.
nRF9160 supports the authentication of AT commands with the Nordic-proprietary %XSUDO AT command. For information on the use of the %XSUDO AT command and creating and storing provisioning keys, see Authenticated access %XSUDO in nRF91 AT Commands Reference Guide.