The set command disables R&D features by closing the modem Universal Asynchronous Receiver/Transmitter (UART) connection, which is meant only for nRF91x1 System in Package (SiP) manufacturing test purposes. The command allows to permanently disable the use of the %XEMPR command. The command also permanently enables the downgrade prevention of modem firmware.
Downgrade prevention means that it is not possible to update an older modem firmware version to a device. Downgrade prevention applies to both Firmware-Over-The-Air (FOTA) and wired firmware updates.
If the <value> parameter is not set or is 0, the
%XEMPR command is permanently disabled after the
%XPRODDONE command has been performed. To keep the command usable after
%XPRODDONE, use AT%XPRODDONE=1
. If the command has been disabled with
%XPRODDONE, it cannot be re-enabled.
The %XEMPR TX power reduction feature can be used with the PTI modem firmware even if it has been disabled with %XPRODDONE.
Syntax:
%XPRODDONE=[<value>]
The set command parameter and its defined values are the following:
The following command example sets the customer production to done and permanently disables the %XEMPR command:
AT%XPRODDONE
OK
or
AT%XPRODDONE=0
OK
The following command example sets customer production to done and leaves %XEMPR usable:
AT%XPRODDONE=1
OK