1. Create an iRO game account.
2. Download and install the "Full Version" which currently is 12.0 Destruction of Morroc. The Game Client is completely free; there is no subscription or purchase necessary to download it.

3. Patch your game using the Ragnarok.exe first, then patch and play using the Valkyrie client.

4. Tell your friends to join you on your adventure!
This standalone Valkyrie patch is only needed when updating older versions of the iRO client. 
Valkyrie is included in all current iRO clients.