Online update:

The firmware is online available.

You can easily initiate the update by three steps: 

Prerequisite: The phone is connected to the Internet.

1. Menu  »  Settings  »  System  »  Update Firmware
2. Enter base station system PIN (default setting: 0000)
3. Press the display key "Yes" to start the download

If your firmware is already up to date, the handset will inform you. No action is needed then.

Via the webpage:

Manual update:

Via the webpage:

1. Settings  » Management  » Firmware update
2. Enter the URL for the new firmware in the User defined firmware file: field
3. Click on the button: Update firmware