Installation is pretty "simple" once you know what you're doing.
The process goes like this:
- You extract the installation files. Do not install yet. - Then you extract the update files into the installation folder you just created ("data" folder). - Do this for each update. - Here it's a good time to do a backup of this installation folder for the future. - Run the installation. It should detect that you have update 1 to 7 available to install.
Just because some software said it was a virus, doesn't mean it was a virus. You should be careful, but false positives do happen. The mirrors listed in the thread have not been hacked. They are the correct file. Check the hashes on the zip if you want, but it's going to match.
Don't download updates 1-6. You don't need them. Get the 4.32 installer with U1-U6 already applied instead. Why would you deliberately get an old version and have to update it 7 times? It makes no sense.
You need two files: Falcon_BMS_4.32_Setup_plus_U1-U6.zip (875 MB) Falcon_BMS_4.32_Update_7.exe (24.9 MB)
Unzip the first file into a folder. If you run the contents of this folder it installs BMS version 4.32U6. You can do this and update the installed software later but it's not the most straightforward way. For a first time install it makes the most sense to upgrade the installation package first to the latest version and then install that latest version the firs t time.
So you run the Falcon_BMS_4.32_Update_7.exe and look for the folder you unzipped Falcon_BMS_4.32_Setup_plus_U1-U6.zip to. It replaces and adds some files to that folder. Now when you install the game it installs the 4.32U7 version.
If however you already had installed 4.32U6 and wanted to patch to 4.32U7, what you have to do is upgrade the installer like the above paragraph and then run the installer again. The installer then becomes a patcher and patches the existing installation.