SIS

File Format
Name	SIS
Ontology	Electronic File Formats Archiving SIS ; ; ;
Extension(s)	.sis, .sisx

SIS is a software installation archive format used on EPOC/Symbian OS. It contains files in other formats such as APP.

Some sources say that SIS stands for Software Installation Script; others say Symbian Installation System.

Identification

SIS files for EPOC release 3, 4, and 5 begin with bytes ?? ?? ?? ?? 6d 00 00 10 19 04 00 10.

SIS files for EPOC release 6 begin with ?? ?? ?? ?? 12 3a 00 10 19 04 00 10.

SIS files for Symbian OS 9.x begin with 7a 1a 20 10.

File Format
Name	SIS
Ontology	Electronic File Formats Archiving SIS
Extension(s)	`.sis`, `.sisx`