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(+1)

i'm trying to download on mac, and when i copy the MAC 4.09 file into terminal and write chmod a+x, then the file name, it says that it is a invalid file mode. Someone suggested chmod +x, but that didn't work either. any way to get the file to not be invalid (I am using the latest version of macos and an apple silicon chip)

Extracting rar with UnArchiver
On the icon > show contents 
On Contents folder > open terminal at this location 
In Terminal 

cd /MacOS 
chmod +x ./MAC\ 4.09
xattr -d com.apple.quarantine ./MAC\ 4.09
./MAC\ 4.09 

This will run the application and the security center will then prompt you to allow or disallow it 
Once you allow it in the security center 
Settings>Privacy&Security>Bottom portion as you scroll down 
The application will open and run