This post contains download links for HF Patch for Aicomi. The full patch release post can be found here. Check it for a free magnet link (you don't have to pay for this patch), a guide and more information.
Download Links
You can use the HF Patch Automatic Downloader app to automatically get the correct version of the patch for your game.
Full patch v2.0 (13GB)
DropMeFiles (the website may put a password on the downloads, read the popups)
Previous versions
How to download and install the patch
Video guides
Unfortunately at the moment all of the video guides are outdated and some things may have changed substantially from how they are shown in the video. They should still give you a rough idea of what to do.
How to download the patch and install it
How to get the game from DMM, install it and install HF Patch
How to install the game and HF Patch
Text guide
Download to any directory other than the game directory.
Start the included .exe file. A UAC prompt should appear. When you click Yes the patch installer will start.
Follow instructions in the installation wizard (for most users all you need to do is keep pressing Next).
If the installation location was not automatically detected or is wrong, you will have to show the patch where your game is installed. If you bought the game on Steam, go to your steam library > properties of the game > view local files to find where the game is installed.
At the start of installation the patch will verify downloaded file integrity. If you get a verification error: close the patch, download it again (try using a different download link and/or web browser) and retry installing the patch.
After the patch installation finishes you can remove the downloaded patch file. That being said, I suggest keeping them in case your game breaks for any reason and you need to install the patch again to fix it.
What to do in case of download issues
If the download is very slow or fails to start, try a different download link and/or a different web browser. If all links are slow test your connection speed. If you have a VPN try changing the server or turning it off. If all fails you might have better luck with the torrent download.
If the installer asks you for another disc, it means that your download is corrupted. Redownload and try again.
Make sure that your antivirus is not flagging and removing the .exe file.
What to do in case of installation issues
If you get a "This patch is inside of the game directory" or "Path too long" error, move the patch files to a folder like "D:\HFP\" and try again.
If you get a "Different game is detected" error, make sure this is the correct patch for your game. AC in the title means that this patch is for Aicomi (doesn't work on HoneyCome and SVS).
If after installing the patch you have issues running the game, restart your PC and try to install the patch again with default settings. Try moving the game to a simple folder like "D:\Games\AC".
If your antivirus is flagging the .exe file or any of the .dll files that the patch is installing (files inside the interop folder are often false-flagged by AVs) make sure that you've downloaded the patch by following links in this post. If you are sure the download came from the right place, it's most likely a false positive (it's a common issue with non-signed application installers).