service). This option may not be available, dependingon your phone.Downloading software updates may involve thetransmission of large amounts of data through yourservice provider's network. Contact your serviceprovider for information about data transmissioncharges.Make sure that the device battery has enough power,or connect the charger before starting the update.Warning: If you install a software update, youcannot use the device, even to make emergency calls,until the installation is completed and the device isrestarted. Be sure to back up data before acceptinginstallation of an update.Software update settingsThis option may not be available, depending on yourphone.To allow or disallow software and configurationupdates, select Menu > Settings > Configuration >Device manager sett. > Serv. softw. updates.Request a software update1. Select Menu > Settings > Phone > Phoneupdates to request available software updatesfrom your service provider.2. Select Current softw. details to display the currentsoftware version and check whether an update isneeded.3. Select Downl. phone softw. to download andinstall a software update. Follow the instructionson the display.4. If the installation was cancelled after the download,select Install softw. update to start theinstallation.The software update may take several minutes. If thereare problems with the installation, contact your serviceprovider.SecurityWhen security features that restrict calls are in use(such as call barring, closed user group, and fixeddialling), calls may be possible to the officialemergency number programmed into your device.Select Menu > Settings > Security and from thefollowing:● PIN code request or UPIN code request — torequest for your PIN or UPIN code every time thephone is switched on. Some SIM cards do not allowthe code request to be turned off.● Call barring service — to restrict incoming calls toand outgoing calls from your phone (networkservice). A barring password is required.● Fixed dialling — to restrict your outgoing calls toselected phone numbers if supported by your SIMcard. When the fixed dialling is on, GPRS connectionsare not possible except while sending text messagesover a GPRS connection. In this case, the recipient’sphone number and the message centre numbermust be included in the fixed dialling list.38 Settings