Hey there!
So when you go to download the patch, you want to make sure that you are downloading either the Google Docs download or the Mediafire download located a little ways down in the thread.
(https://media.discordapp.net/attachments/879146580459020379/880151356206350336/unknown.png?width=719&height=357)
^^The downloads down here^^
Once you do that, make sure to ONLY move the .exe out of the downloaded folder into the main FH folder - and hit replace when it prompts you to. Let me know if you have anymore problems!