Commissioning a project   
5.7 Updating the operating system 
  Comfort Panels 
168  Operating Instructions, 07/2017, A5E36770603-AB 
 
Updating the operating system of the HMI device 
If possible, use the interface with the highest bandwidth, such as Ethernet, to make the 
connection. 
 
Updating the operating system deletes all data on the HMI device 
If you update the operating system, data on the target system is deleted. Therefore, first 
back up the following data: 
•  User administration 
•  Recipes 
A reset to the factory settings also deletes the license keys. Back up the license keys as 
well before restoring the factory settings. 
 
Note 
Calibrating the touch screen 
After the update, you may have to recalibrate the touch screen.
 
●  The HMI device is connected to the configuration PC. 
●  The PG/PC interface is set. 
●  The HMI device is selected in the project tree. 
●  The HMI device is switched on. 
Updating the operating system  
The configuration settings from "Devices & Networks" are used to establish a connection 
between the HMI device and the configuration PC.  
To update the operating system, follow these steps: 
1.  Select the "Update operating system" command in the "Online > HMI device 
maintenance" menu. 
The "SIMATIC ProSave [OS-Update]" dialog box opens. The path to the image of the 
operating system is already set.  
2.  If needed, select another path for the operating system image that you wish to transfer to 
the HMI device. 
3.  Click "Update OS". 
This starts the update. The update operation can take time, depending on the connection 
selected.