User's Manual Part 2

148 Installing applications
Preliminary
The Setup application also can be used later to add or delete
components.
Installing applications
Installation file security
Installation files in SIS format are typically used for installation
of C++ or PersonalJava applications or other content into the
P800 file system.The vendor who prepared the SIS file decides
where in the file system the various content of the SIS file will
be installed. This means that you need to decide if you trust that
the SIS file does not contain harmful content. If you know for
sure who produced the SIS file then you can take an installation
decision based on what you know about that vendor. Your P800
supports cryptographic verification of vendor identity.
During installation the P800 verifies a digital signature and
certificate in the SIS file against a root certificate on 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 own risk. In general it is
recommended that you install only from SIS files where the
vendor identity and file integrity can be verified.
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 cable, IR 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 cable, infrared or Bluetooth
wireless technology. When connected, an icon is shown in
the taskbar on the PC.
2. Start the PC software
P800 Download Station and select the
application (.sis or .jar file) to install. It is also possible to
double-click a file in file manager and make the P800
Download Station start automatically.
3. Confirm to install the application in the P800.
4. Select target drive (phone memory or Memory Stick).
Download to the P800 begins.
5. Installation starts when download is complete.
6. Installation is complete.
P800_UM.book Page 148 Wednesday, August 28, 2002 4:19 PM