Are you asking about patching your current mod to 30, installing a 30 based mod whilst retaining all your settings or updating to 30
The first is needless complecated and would require large segments of source code replaced, reworked and moved. Simply install a new mod, a lot simpler
To simply update to a latter mod, drop the .exe in your emule directory 90% of the time it will work fine, but there may be incompatability. zip up your emule directory anyways. Some files won't need replacing, like known.met which is universal
If your just updating, delete ur mule directory and then create a new one. Point your temp and incoming directories to the right location
