I am sorry, I didn't make myself clear. there is no doubt that the current version is absolutely great.
however, there is some goals I can't achieve with the latest version.
1, I want to add some AI char which controlled by openkore, so I can have some accompany during gaming. but openkore doesn't support any kRO which newer than 2017
2, I failed to change the language type to Chinese by modifying the sclientinfo.xml. I suggest the latest kRO client doesn't support Chinese
these are the reasons that why I want to host the other versions of offline RO