.SIS.DM File

The sis.dm file extension is associated with Symbian smart phones developed by Nokia. The sis.dm contains program executable data protected by digital rights management. Protected DRM applications are downloaded from Nokia Ovi Store.

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

This sis.dm 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.

A sis.dm file extension is related to Symbian operating system for smart phones. A .sis.dm file stores application with DRM protection.

How to open:

This file type is not meant to be opened directly, there is no software that could open and work with it directly, or there is no information available in public sources about opening this file type. This is usually the case of some internal data files, caches, temporary files etc.

How to convert:

As far as we know, this .sis.dm 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.