The procedur i described was for trying to figure out what’s broken. The upgrade should be as simple as the other upgrades but some prerequisites obviously fails us all.
I used curl to download the file. I used tcpflow to see the request that the server does to get the package. The headers of the request is modified that is why just copying the url won’t work. I suspected that my zip-lib included in php was to old so I made a cli-script which unpacked the files to test if that was the case.
If you can get hold of the file I think you just replace the genesis directory in wp-content/themes with the content in the zip file. Changes made to the theme will be overwritten so be sure to make a backup first.
I have the same problem. The file seems to be ok and I have tried to unzip a downloaded version with cli-php and it works. Plugins and WordPress is updated just fine.
