secondchildren said:This question in answered in first post of the thread, and in many others later.
You can't install the patch now. The bin file are not installable. You have to wait until April 17th, download the last part (10 Mb) and the launch exe to install.
not quite right about the 10 mb part, you'd have to download the last 300 mb part
secondchildren said:If you use predownload on the release date you will need to download just 300MB