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SIS SISX
Not possible

Convert SIS to SISX

Can you convert SIS to SISX?
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Is it possible to convert SIS to SISX?
No - not a direct conversion.

SISX requires a valid PKI digital certificate issued to the developer. A SIS file cannot be mechanically converted to signed SISX without a certificate. Unsigned SISX exists but most Symbian 9.x devices refuse to install it (requires capability signing). Not a practical conversion.

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Tested on macOS, Windows & Linux
Last verified Oct 2026

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Converting SIS to SISX

A .SIS file and a .SISX file hold different kinds of data, so there is no direct way to turn one into the other. The programs listed below can open .SIS files and may be able to export the content to a format closer to .SISX.

A full step-by-step guide for this conversion is on the way; the information above is drawn straight from our database.

Programs that convert SIS

SIS to JAR converter

About these formats

.SIS Symbian OS Installation File

A SIS file is an application installation package for Symbian OS, used on Nokia, Sony Ericsson, and Motorola phones from 1997 to around 2012. Symbian is discontinued - no modern phone runs…

Open .SIS details →
.SISX Symbian OS program installation executable file

A .SISX file is associated with Symbian OS program installation executable, a misc file.

Open .SISX details →