This is the Internet version of the user’s guide. © Print only for private use.

During installation the P800 verifies a digital signature and certificate in the SIS file against a root certificate in the phone. Successful verification means that you can trust who produced the SIS file and that the content has not been modified after it was created. If the SIS file does not contain a digital signature you will be given a warning about the problem but you can still decide to proceed with installation at your own risk. In general it is recommended that you install only from SIS files where the vendor identity and file integrity can be verified.

Note Installation of uncertified applications may cause your system to crash and all your data will then be lost.

MIDP applications run in a protected environment with no access to sensitive information so no signatures are required for MIDP JAR files.

From a PC

PC Suite for P800 must be installed in your PC and the P800 must be connected to the PC via SyncStation, infrared, or Bluetooth wireless technology in order to install applications from your PC.

Installing applications from your PC

1.Connect your P800 to the PC via SyncStation, infrared or Bluetooth wireless technology. When connected, an icon is shown in the status area to the right in the taskbar on the PC.

2.Start the PC software Install Software and select the application (.sis file) to install.

3.Confirm to install the application in the P800.

4.Select target drive (phone memory or Memory Stick Duo). Download to the P800 begins.

5.Installation starts when download is complete.

From the P800

Program packages, for example, games, can also be downloaded to your P800 from the Internet or from a Memory Stick Duo. When downloading a file from the Internet, the installation will start automatically when the file is completely downloaded to your P800. The procedure below describes installation of application packages already in the P800 but not yet installed.

See “To download and upload files, for example, applications” on page 76 how to download files from the Internet.

Installing applications in the P800

1.Select > Applications > Install.

2.Select software in the list.

3.Select Install. If the software is certified, an information

dialog will be shown with the name of the software, version and supplier. Select Install again.

Installing applications

123