If you click on that link which says 'Failed', it will open a webpage with your default browser, you'll find powershell 2.0 download link there.
Anyways powershell 1.0, is made for XP, but as I see, you are using windows server 2003. Well, server 2003 have the same kernel as XP, so 1.0 should work properly.
If not, then use 2.0:
Download Powershell 2.0:
By the way, I'm still saying that trial vps from upcloud
IS NOT WORKING FOR ANY 4S SERVER!.
Simple, you can't disable firewall.