X32 firmware 4.13 Broken?

I am trying to update a theatre’s X32 to the newest version. It seems the file on the behringer website for version 4.13 is broken and gives me a ‘this file is unsupported’ message when i try to unzip the folder. (I have tried this on mac and windows and even tried downloading from different browsers). Can anyone help me fix this issue? Or give me the update file if they have it?