It is recommended that you perform kRO installation if you do not have the latest kRO installation installed instead of patching it on top of any RO files that you have. If you already have kRO installed, you could just download Installer.exe or Installer.zip and run it along side of kRO. Please do note that installing Ragnarok Online SEA's alongside other servers may causes error.
Once Installed, please run the patcher to update the game.
1) Download https://ro.industrial-illusions.net/files/ if you do not have any Ragnarok Online installations on PC.
2) Extract to any location.
3) Download Installer.exe and install inside the extracted folder.
4) Run Patcher and play :D
XCMSModifiedLabel : 2018-01-20