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Windows 7: Downgrade un-genuine version of Win7 Ultimate to valid Win7HomePremium

27 Mar 2011   #1
tristancook

Windows 7 Ultimate x64
 
 
Downgrade un-genuine version of Win7 Ultimate to valid Win7HomePremium

Hiya,
I'm really new to this forum so I would love some help.
Recently ,I bought a copy of Windows 7 Ultimate off eBay. Thinking it was real, I installed it onto my laptop which had Windows 7 Home premium.
A message now comes up saying
'This version of windows is not valid, please insert valid key'
I put on my old Windows 7 Home Premium key but a message comes up saying
'The product key you entered will not work with this edition of Windows 7. You must either run Windows 7 setup or enter a Windows 7 Ultimate product key.'
I want to revert it back to Windows 7 Home Premium (which I have a valid product key for)without losing any data.
Thanks in advance,
tristancook

PLEASE HELP ME!!!


UPDATE 25/4/11
If I edit the registry keys and then repair install is it safe or not? Do I need to make a system restore? Or is there any way that microsoft can help me.
Thanks


My System SpecsSystem Spec
.
27 Mar 2011   #2
Mike Connor

Several, including Windows 7 x64 Ultimate
 
 

See here;

Startup Repair

Buying stuff like that from "unknown" vendors is always a risk.

Regards....Mike Connor
My System SpecsSystem Spec
27 Mar 2011   #3
Ageeb

Windows 7 Ultimate x64
 
 

What did Ultimate provide for you that Home Premium didn't? (curious...)

You won't be able to downgrade, but instead try to do a system restore from a factory created partition, or discs you've hopefully created. Use the laptop manufacturers website and your laptop manual for details on the restore.
My System SpecsSystem Spec
.

27 Mar 2011   #4
gregrocker

 

Unfortunately, while we can easily UPgrade within Win7 versions using Anytime Upgrade, MS wants us to clean reinstall if we downgrade.

However there is a popular workaround by which many beta testers switched from Ultimate to their purchased version of Win7. It works by tricking the installer into thinking it is doing an always-allowed same version Repair Install when it is reallly changing the version while reinstalling the OS, as a Repair Install does while keeping all programs files and settings in place.

To do this, back up your files and a Win7 backup image if you want a path back if needed. Then set a System Restore Point - Create, run regedit as Admin to change the two keys shown below to exactly HOMEPREMIUM for the EditionID, and Windows 7 HOMEPREMIUM for the ProductName:

-regkeys.png

Now run the Win7 Home Premium DVD or extracted ISO files from the desktop as shown in the Repair Install tutorial. If you need to unlock all versions in your Ultimate installer, extract the ISO using ImgBurn, run the Ei.cfg Removal Utility to unlock all version, then burn to DVD or extract or mount the ISO to run Repair Install. Be sure to select Home Premium version. Activate with the key on COA sticker.


My System SpecsSystem Spec
27 Mar 2011   #5
Mike Connor

Several, including Windows 7 x64 Ultimate
 
 

Quote   Quote: Originally Posted by Ageeb View Post
What did Ultimate provide for you that Home Premium didn't? (curious...)

You won't be able to downgrade, but instead try to do a system restore from a factory created partition, or discs you've hopefully created. Use the laptop manufacturers website and your laptop manual for details on the restore.
Windows 7 Pricing Buy Install Choose Edition Features Upgrades Offers

Regards....Mike Connor
My System SpecsSystem Spec
15 Mar 2015   #6
agathanggeloua

Windows 7 Home Premium 64bit
 
 

Quote   Quote: Originally Posted by gregrocker View Post
Unfortunately, while we can easily UPgrade within Win7 versions using Anytime Upgrade, MS wants us to clean reinstall if we downgrade.

However there is a popular workaround by which many beta testers switched from Ultimate to their purchased version of Win7. It works by tricking the installer into thinking it is doing an always-allowed same version Repair Install when it is reallly changing the version while reinstalling the OS, as a Repair Install does while keeping all programs files and settings in place.

To do this, back up your files and a Win7 backup image if you want a path back if needed. Then set a System Restore Point - Create, run regedit as Admin to change the two keys shown below to exactly HOMEPREMIUM for the EditionID, and Windows 7 HOMEPREMIUM for the ProductName:

Attachment 145914

Now run the Win7 Home Premium DVD or extracted ISO files from the desktop as shown in the Repair Install tutorial. If you need to unlock all versions in your Ultimate installer, extract the ISO using ImgBurn, run the Ei.cfg Removal Utility to unlock all version, then burn to DVD or extract or mount the ISO to run Repair Install. Be sure to select Home Premium version. Activate with the key on COA sticker.
I've had the same issue with my computer, the preinstalled Win7 Home premium 64bit upgraded to Ultimate but I don't have a key so I want to revert it. I tried this workaround but it still came up with the "You can't downgrade from Ultimate" when I tried to do a repair install from the disc?
My System SpecsSystem Spec
15 Mar 2015   #7
AddRAM

Windows 7 Professional x64 Service Pack 1
 
 

Why did you upgrade/install Ultimate without a key ?

For kicks, boredom ?

Did you create the dvd to re install Home Premium yet ?

Why is Home Premium listed as your Operating System in your specs if you have Ultimate installed ?
My System SpecsSystem Spec
15 Mar 2015   #8
agathanggeloua

Windows 7 Home Premium 64bit
 
 

Same as the OP, dodgy buy off eBay :/

I have been using the home premium CD that came with my PC, it takes me to the upgrade/reinstall page, but when I click upgrade it gives me the "Ultimate can't be upgraded to Home Prem" compatibility report.

Well home premium is what I own so I put that, it's currently running an inactivated Ultimate x64 SP1 if that helps?
My System SpecsSystem Spec
15 Mar 2015   #9
AddRAM

Windows 7 Professional x64 Service Pack 1
 
 

You have to boot from the HP dvd and do a clean install to wipe out Ultimate, you don`t choose upgrade, you choose custom, then drive options, then format your install partition.

Clean Install Windows 7

Step #6
My System SpecsSystem Spec
15 Mar 2015   #10
agathanggeloua

Windows 7 Home Premium 64bit
 
 

Why cant I do that workaround? I'd really rather not have to do a clean install..
My System SpecsSystem Spec
Reply

 Downgrade un-genuine version of Win7 Ultimate to valid Win7HomePremium




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