SIS

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

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.

SIS files for EPOC release 6 begin with.

SIS files for Symbian OS 9.x begin with.

Specifications

 * SIS File Format (for versions prior to Symbian OS 9.1)
 * Symbian OS v9.X SIS File Format Specification, Version 1.1

Sample files

 * http://cd.textfiles.com/psion/disk1/GAMES/ ...
 * https://www.mobileshox.com/symbian-games/

Links

 * Wikipedia article
 * Nokia Developer Wiki article (from archive.org)