Siemens SCALANCE XM-400 Configuration Manual page 163

Firmware
The firmware is signed and encrypted. This ensures that only firmware created by Siemens
can be downloaded to the device.
Note
Incompatibility with previous firmware versions with/without PLUG inserted
During the installation of a previous version, the configuration data can be lost. In this case,
the device starts up with the factory settings after the firmware has been installed.
In this situation, if a PLUG is inserted in the device, following the restart, this has the status
"Not Accepted" since the PLUG still has the configuration data of the previous more up-to-date
firmware. This allows you to return to the previous, more up-to-date firmware without any loss
of configuration data. If the original configuration on the PLUG is no longer required, the PLUG
can be deleted or rewritten manually using the WBM page "System > PLUG".
Configuration files
Note
Configuration files and trial mode/Automatic Save mode
In Automatic Save mode, the data is saved automatically before the configuration files
(ConfigPack and Config) are transferred.
In Trial mode, although the changes are adopted, they are not saved in the configuration files
(ConfigPack and Config). Use the "Write Startup Config" button on the "System >
Configuration" WBM page to save changes in the configuration files.
CLI script file
You can download existing CLI configurations (RunningCLI) and upload your own CLI scripts
(Script).
Note
The downloadable CLI script is not intended to be uploaded again unchanged.
SCALANCE XM-400/XR-500 Web Based Management (WBM)
Configuration Manual, 05/2017, C79000-G8976-C248-12
Configuring with Web Based Management
5.4 The "System" menu
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