At every stage I checked the sha256 and the file remained uncorrupted. But when I downloaded it I had a real fight on my hands.
Every time I tried to get it, somehow the download was mysteriously cancelled or interrupted. Eventually I bought some software that enabled me to FTP my Google online space. You are not supposed to do that (buy software to use in Linux) but this was an emergency.
Eventually at midnight last night I got the Zip onto my Linux, but when I tried to unzip it this is what I got (see photo).
I am mightily suspicious of this since it pops up straight away which seems remarkable for such a big zip, but in a sense it doesn't matter if it is corrupted or if I am being prevented from unzipping it.
Either way I can't use it and I have wasted a phenomenal amount of time and effort. This is what your taxes pay for. Clearly only a government agency such as MI5 or MI6 could do this.
Jonathan Brind