Anyone know of a method to do this?
I have tried following this guide:
http://www.unawave.de/installation/d...n.html?lang=EN
And this tool (but I think it just automates the above guide):
http://mp7000.deviantart.com/art/Win...rade-159805048
But each time I just get an error saying you can't upgrade Professional to Home Premium.
The problem is I installed and configured Windows 7 Pro on a new build for my client, I skipped the licence key entry as the client hadn't sent me the COA yet but it arrived today and it's for Home Premium. If I have to I will wipe and start again but the entire machine is configured for them so if there was a simple way of downgrading it would save some time
Cheers
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