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Installing applications

It is possible to install new applications in your P908. These applications can be obtained in several ways, for example:

from the Internet.

from a CD.

from a Memory Stick Duo.

as an e-mail attachment.

from other devices.

There are two types of installation files for applications:

SIS (Symbian Standard Installation) made for P908 or other Sony Ericsson devices.

MIDP JAR (Mobile Information Device Profile Java Archive).

Note SIS and JAR files are installation packages containing one or several files.

This chapter also applies to other types of software to install, for example, system components and add-ons.

Applications from developers outside Sony Ericsson, so-called third-party developers, might be able to be installed in the P908. Applications which are not approved by Sony Ericsson are not guaranteed to work correctly or securely, and users install them

at their own risk. Product failures caused by applications not approved or made for Sony Ericsson will not be covered by your warranty.

Installing applications on your P908

Installation file security

Installation files in SIS format are typically used for installation of Epoc or PersonalJava ™ applications or other content into the P908 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 P908 supports cryptographic verification of vendor identity.

During installation the P908 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

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Installing applications