System Menu 4.0
Regional Summaries Of Changes
Analysis Of Additions
Likely added to thwart its use for piracy. Version is 512 nearly double the original title's version.
Slightly updated version (one minor version number) of the title included with Animal Crossing: City Folk.
High version number suggests this is the latest IOS currently available and will likely be used for the 3.5 System Menu update for Japan, US and European regions.