Whenever you try to upgrade from Windows 7 Beta to RC build or RC to final RTM build, you get following error message:
Actually Microsoft doesn't recommend upgrading from Windows 7 Beta to RC build and RC to RTM build. So its not possible unless you hack a file "cversion.ini" present in Windows 7 setup folder.
So if you want to upgrade existing Windows 7 Beta to RC or RC to RTM build, follow these simple steps:
1. Go to the folder containing Windows 7 RC or RTM ISO file and extract it using 7-Zip.
2. Now go to "Sources" folder and look for "cversion.ini" file.
3. Open the file in Notepad and you'll see following lines in the file:
Windows 7 RC:
Windows 7 Beta:
4. As you can see the MinClient value is set to 7233 in RC and 7077 in Beta build setup file but the public RC build number was 7100 and public beta build number was 7000. So just change 7233 to 7100 in RC build setup file and 7077 to 7000 in beta build setup file.
Windows 7 RC:
Windows 7 Beta:
5. That's it. Save the file and run the setup.exe file again. Now it'll allow you to upgrade from beta to RC or RC to final RTM build.
This article was posted by VG in following section: Troubleshooting, Windows 7.
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Madaya
Is it Activation is required If I upgrade from windows7 RC to RTM build,
HItesh
Does it mean that after upgrade Win 7 RTM will be activated parmanently?
VG
You'll need to re-activate Windows after upgrade.
Julian
Thaaaaanks alot. I'll now deinstall Windows 7 RTM and reinstall Windows 7 RC x64 and then upgrade to x64 version of RTM. Really thx for posting. Microsoft is so dumb by giving away their evaluation copys so easy.
PMoto
Re-activate windows 7 RTM???
Is it like activate RC and can be legaly done? With what expiration date?
Nitin
Nice Tutorial.....thanks, now there is no need to reinstall the software and settings...
@PMoto, Yeah you have to activate Windows 7 RTM with a genuine key, if you have. If you are a technet or msdn subscriber, then you'll get the key from there....
RTM have no expiration date as it the final release of Windows 7. you have to pay for RTM build, there are not freely available to download and activate...
Vasu
It is very much same as the previous time when we upgraded from beta to RC.Vishal how can windows 7 RTM be activated?
VG
^^ You'll need a genuine Windows 7 key and then you can activate it.
TGW
Tried this. Install hanged on WPEInit on first restart. Anyone else having this problem?
Britto
Hi, i am using windows 7 enterprise 7600.16385. is it RTM or RC