How to Upgrade Windows 7 RC/Beta to Windows 7 RTM Build 7600
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Most of the users are still on Windows 7 Beta Build 7000 and Windows 7 RC Build 7100 since those were the two Windows 7 Builds which was distributed under Public Preview. Windows 7 Beta users must upgrade to Windows 7 RC as after July 01, 2009 Windows 7 Beta has started Bi hourly shutdown and will expiry on August 1, 2009 whereas Windows 7 RC will expire on June 2010.
Windows 7 RTM build 7600.16385 is already singed off and handed to OEM partners as well as it has been leaked on popular torrent websites. If you are attempting to upgrade Windows 7 RC/Beta to Windows 7 RTM setup will give you an error message saying: You cannot upgrade this prerelease version of Windows 7. Go online to see how to install Windows 7 and keep your files and settings.
That’s because Windows 7 RTM was build to block all versions prior to 7233. Like we had published guide on how to upgrade windows 7 Beta to Windows 7 RC same guide is still applicable here,
How to Upgrade Windows 7 RC/Beta to Windows 7 RTM
1. Mount Windows 7 RTM Build 7600 ISO and Extract content to any folder or USB drive
2. Now go to Sources folder of Windows 7 and open “cversion.ini” file in notepad
3. Modify the “MinClient” build number to a value lower than your installed Windows 7 Build. For example, change 7233 to 7000 if you have Windows 7 Beta Build installed.
[HostBuild]
MinClient=7000.0
MinServer=7100.0
4. Save the updated file to the same location and then run setup.exe to start Windows 7 RC upgrade process.
That’s it, Now follow on Screen instructions and choose Upgrade option.
Check out :- How to Enable All Windows 7 SKU installation Screen on Windows 7 RTM
Source: Webupd8
Reader Comments
Thanks for the guide, but will we have to reactivate Win7 or it still keeps the old validation information?
@LION:
Yes, you have to reactivate. This is the real final version of windows 7 and you have to purchase them from Microsoft. All I can say is, an XP License is £90, so windows 7 could be around £200 like Vista Ultimate was when it first came out.
Note that you can’t upgrade from one BETA/RC-edition to another full edition, eg. ‘Win7 Ultimate RC’ to ‘Win7 Pro’!
> can’t upgrade from one BETA/RC-edition to another full
> edition, eg. ‘Win7 Ultimate RC’ to ‘Win7 Pro’!
This doesn’t work anymore!!!
I tried U7B7100 -> U7N10/22GA and got the can’t upgrade message!!!
Could it be U7->U7N is blocked?