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By default, migrated chargers connect to Eve Control using an insecure WebSocket connection (ws://). To upgrade to a secure connection (wss://), you need to perform a security firmware update that installs the required TLS root certificate and updates the OCPP connection URL.

 

1 Verify the Charger is Online
Navigate to Charging Stations and confirm that the charger you want to update is online and connected to Eve Control.

 

2 Initiate the Security Firmware Update
Open the charger’s detail page and navigate to the Firmware tab.

Make sure you select the security update that corresponds to your charger’s platform and your type of connection. For example, for an NG9 charger connected by LAN cable, select “NG9 Wired Security Update” from the list

Security firmware update selection list

Select the security update matching your charger’s platform and connection type

 

3 Wait for the Update to Complete
The charger will download and apply the security firmware update, then reboot automatically. After the reboot, it will reconnect to Eve Control using the secure wss:// connection.

 

4 Verify the Secure Connection
Once the charger is back online, confirm that the connection is now using wss://. 
You can verify this in the charger’s Logging tab or configuration details.

 

Why WSS? Secure WebSocket (wss://) encrypts all communication between the charger and Eve Control using TLS, protecting against eavesdropping and tampering. This is the recommended configuration for production deployments.
Keywords: Eve Control, secure websocket, wss, ws, security firmware update, TLS certificate, OCPP connection, charger security, migration, root certificate