Saturdays from 6-7 Server Time
Download all 13 parts: Full Installer.
Make sure all the parts are in one folder. Run part01.exe and install.
Run RidiculouslyRagnarokOnlinePatcher.exe and enjoy!
(Other Option) Extract to a fully installed RO folder the Lite RAR
Homunculus AI Fix, download if you're erroring with homunculus and extract into RO folder: LINK