Downgrade: Change Windows 7 Ultimate to Home Premium or Professional

#21
not working for me

I've tried changing the ID and edition name to every permutation of HOMEPREMIUM, Home Premium x64 that I can think of. And professional. And even Home Basic. Nothing works. No matter what I change it to in every instance I get the same stupid reply that I can't upgrade Windows Ultimate to Windows Professional.

Does this mean we certainly have to upgrade the DigitalProductID key or something like that in addition to the EditionID and Product Name?
 


#22
Are you trying to go from 32 to 64 bit? .. that won't won't work.... however if you just want to upgrade a 32 or 64 bit version you may have to deactivate your current version first.
Google slmgr and read on how to do that... I think there are 3 commands -rilc -cpky and -upk that will deactivate it.
 


#23
Sorry guys. My mistake. I hadn't tried *every* permutation. I finally found one that worked. I think it was PROFESSIONAL in my case. I was upgrading 64-bit RC1 to 64-bit Professional. Seems to have worked so far, but the process isn't done yet.
 


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