Yep. You done borked the entire thing which is why it keeps erroring. Always, always close the patcher when it starts to download old patches and grab the patch.inf from choobs or ask on the forums first for the correct patch.inf. Or literally just copy the patch.inf from your game folder somewhere else as a backup just in case such an issue crops up.
Regularly replace it post maintenance when the client successfully repacks the patches. This saves you time from having to re-install from scratch. All you do when such an issue arises is copy the backup and replace the one in the game folder with it. This will hammer the patcher into shape telling it not to download patches again because it already did that. iRO's patcher suffers from memory loss from time to time for some people. Forcing a re-patch is the quickest way to fix it.