Release date:

  • 26 Febr 2015


  • New handset support:
    • Gigaset S650H PRO full support
  • Web Configurator: Firmware update page can be hidden by provisioning parameter
  • SIP Session Timers implemented according to RFC 4028
  • Blind transfer: Improve behaviour when device is blind transferred by another party


  • NL - RoutIT: 2 - 3 seconds delay of audio path after call pickup

  • Broadsoft/Telepo: only 2 of 4 handsets are ringing in call group
  • DTMF problem behind Sonus gateway fixed

Known Issues:

  • Reboot occurs after deregistering handset
  • Gigaset T300/T500 PBX: Handset name is not replaced after provisioning to Celsius server
  • Copy phone number from call list to directory is not always possible – phone goes back to idle
  • After firmware update system PIN is changed to default '0000'

Download URL:

User specific URL:


How to update:

Via the webpage:

  1. Download the software and store this on your own accessible http server.
  2. In the web-interface of the N510: Go to: Settings  » Management  » Firmware update
  3. Enter the URL for the new firmware in the User defined firmware file: field
  4. Click on the button: Update firmware


Automatic (Online)

Change the Data server to:

Then if you press the Update firmware button the device should automatic find the Firmware.




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