The PSO2 Tweaker is a replacement for the normal PSO2 Launcher, used to update and launch the original Japanese version of the game. The Tweaker adds several options to the game, such as the option to remove the censor file, automatically download and install new English patches as they are updated, and much more! It is also now fully customizable and Open Source!
The tweaker requires at least the .NET Framework 4 to run in Windows.
Special thanks to http://arks-layer.com/ for this download.