DM MO Editor
The Management Object Editor Tool can be access here: http://devtoolkit.openmobilealliance.org/DMEditor/Default
The tool is explained here: https://wiki.openmobilealliance.org/display/TOOL/Introduction+to+Device+Management
If you find any issues with this tool, please report the bug here: https://github.com/OpenMobileAlliance/OMA_DM_MO_Editor/issues