Auto-Update

Hello my launcher works well, is the image of the launcher and update it but only if the file is from another gunz or no such file but if I put for example a new system.mrs (edited the zitem) i pack system. mrs, put to the folder, i delete the old patch.xml, make the new patch.xml with the new system.mrs. In the gunz folder its the old system.mrs, when I start the launcher does not update my new system and keeps the old, that's the problem I can not update new files.
Help me pls. Im using ijji launcher.