Lastest firmware update process is a joke

I went to this page , downloaded the latest file , it updated , but stll said it was incomplete, so I extracted all the files on the download 800mb worth. I’m guessing that was wrong now. It updated again and then I had the warning.

I’ve rolled back to 2.05.08 and thankfully its now working again.

However, when it boots, it still pops up with a warning about unofficial firmware having been loaded.