The disk update will take you to 4.1. Since you have that already, there may be another update involved, but it will not update your system menu to a higher version.
The current highest version is 4.2, but this will not allow you to play games that are out of your region, so it is not recommended to update via nintendo internet update.
There is a guide to get that game to work in the games section. This should include the steps to be taken for modchip users.