Files with file extension can be found as special DRM protected installation packages for Nokia phones based on Symbian.

Detailed description

Software that open file

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SISX.DM file extension - Nokia Ovi Store protected program

What is file? How to open files?

The file extension is associated with Nokia smart phones with Symbian operating system.

The file contains program executable data protected by digital rights management. Protected programs are downloaded from Nokia (Ovi) Store.

To remove DRM protection, open the file in editor and delete first four lines of text and remove dm part from file extension.

This file type entry was marked as obsolete and no longer supported file format.

This type of file is no longer actively used and is most likely obsolete. This is typically the case for system files in old operating systems, file types from long discontinued software, or previous versions of certain file types (like documents, projects etc.) that were replaced in higher versions of their original programs.

The default software associated to open file:

Symbian OS icon

Nokia Corporation logoSymbian OS  Symbian software

Company or developer:
Nokia Corporation

Symbian OS was the first popular user-friendly operating system for smart phones. Symbian OS supports many modern features, such as multitasking, memory protection, multi-touch, Microsoft Silverlight, Adobe Flash, widgets, video conferencing etc.. Pre-installed applications in phone can manage phone calls, SMS, MMS, multimedia, e-mails, Internet browsing etc.. Applications for Symbian are written in Symbian C++ programming language. Other applications are available to download on Nokia Ovi Store.

Help how to open:

These files are used to install app on Symbian devices (Nokia).

How to convert:

As far as we know, this file type can't be converted to any other file format. This is usually the case of system, configuration, temporary, or data files containing data exclusive to only one software and used for its own purposes. Also some proprietary or closed file formats cannot be converted to more common file types in order to protect the intellectual property of the developer, which is for example the case of some DRM-protected multimedia files.

List of software applications associated to the file extension

Recommended software programs are sorted by OS platform (Windows, macOS, Linux, iOS, Android etc.)
and possible program actions that can be done with the file: like open file, edit file, convert file, view file, play file etc. (if exist software for corresponding action in's database).

Click on the tab below to simply browse between the application actions, to quickly get a list of recommended software, which is able to perform the specified software action, such as opening, editing or converting files.

Software that open file - Nokia Ovi Store protected program

Programs supporting the exension on the main platforms Windows, Mac, Linux or mobile. Click on the link to get more information about Symbian OS for open file action.


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