Step#1: Download latest kRO Full installer
This installer contains a clean copy of the latest kRO Full files that require to run Ragnarok Online Servers. After downloading this you need to download the mini installer.
kRO Full Client (Clean)_20190225 >>Click Here<<
Step#2: Download ZombieRO Mini Installer phase-2 (20191018)
In the event you have a clean copy of the latest full kRO folder, you will only need to download the Mini Installer.
Mini-Installers will overwrite each other, please be careful.