If you mean, when will BnSBuddy work with addons in Korea, it should be on the next update.
For now, all you can do is wait, as the key to decrypt the .dat files is different from region to region, a design choice that wasn't considered when BnSBuddy was written.
(Programming comes with tradeoffs, and designing it without support for multiple keys was probably done because it wasn't a necessity until ... last week.)
More information will be added, if there are any changes.
Once a fully working update is released, this post will be closed.