Silver Server
Patch Notes are applicable to Silver Server only. The original korean patch notes can be viewed from the client launcher, but there is no permanent archive, so no link is provided here. Some details may be lost in translation due to lack of context, and accuracy is not guaranteed.
4.2.6
4.2.5
4.2.4
4.2.3
4.2.2
4.2.1
4.2.0