Ist http://gigaset.siemens.com/chagall/1/chagall072_01.bin sinnvoll? Gigaset C450 / C460 IP Firmware update 09/2008 Download versie: 01072 Improvements: Response time for switching the audio channel optimized Active return loss optimized for improvement of acoustics Mediastream with MAC address ff:ff:ff:ff:ff:ff suppressed Allow entry of special characters in display name Refresh timer for registering now adaptable in web config software Connection establishment accelerated How to update the firmware You don't need to download files. The firmware is updated directly online by the Gigaset C450 IP. You can easily initiate the update by three steps: Menu Settings » Base » Firmware Update Enter base station system PIN (default setting: 0000) Press the display key "Yes" to start the download If your firmware is already up to date, the handset informs you. No action is needed then. How to check for your firmware version Via Web Configurator: Status » Firmware version » The first 5 digits indicate the number of the firmware update. If you are in a call (> 8 sec): Menu » Service-Info » Scroll to list entry number 4. The first 5 digits indicate the number of the firmware update.